Auto generate dark mode previews and screenshots (#776)

With this change, composable previews and screenshots should be created with just:
```
@ElementPreviews
@Composable
fun MyViewPreview() {
    ElementPreview { 
        MyView()
    }
}
```

- Adds `@ElementPreviews` which is a shorthand for:
```
@Preview(name = "D")
@Preview(name = "N", uiMode = Configuration.UI_MODE_NIGHT_YES)
```
Should be used in connection with the now public `fun ElementPreview()` composable.

- Adds ElementPreviews to previewAnnotations in dangerfile
- Screenshots of night mode previews are now rendered with night mode
- Replaces `ElementPreviewLight` and `ElementThemedPreview` with `ElementPreview`
- Deprecates `ElementPreviewDark` which should be removed.
- Remaining usages of `ElementPreviewDark` are now ignored during screenshot tests

features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/about/AboutView.kt

@@ -19,12 +19,12 @@ package io.element.android.features.preferences.impl.about
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.stringResource
-import androidx.compose.ui.tooling.preview.Preview
+import io.element.android.libraries.designsystem.preview.ElementPreviews
 import androidx.compose.ui.tooling.preview.PreviewParameter
 import io.element.android.libraries.designsystem.components.preferences.PreferenceText
 import io.element.android.libraries.designsystem.components.preferences.PreferenceView
+import io.element.android.libraries.designsystem.preview.ElementPreview
 import io.element.android.libraries.designsystem.preview.ElementPreviewDark
-import io.element.android.libraries.designsystem.preview.ElementPreviewLight
 import io.element.android.libraries.ui.strings.CommonStrings
 
 @Composable
@@ -48,12 +48,13 @@ fun AboutView(
     }
 }
 
-@Preview
+@ElementPreviews
 @Composable
-fun AboutViewLightPreview(@PreviewParameter(AboutStateProvider::class) state: AboutState) =
-    ElementPreviewLight { ContentToPreview(state) }
+fun AboutViewLightPreview(@PreviewParameter(AboutStateProvider::class) state: AboutState) {
+    ElementPreview { ContentToPreview(state) }
+}
 
-@Preview
+@ElementPreviews
 @Composable
 fun AboutViewDarkPreview(@PreviewParameter(AboutStateProvider::class) state: AboutState) =
     ElementPreviewDark { ContentToPreview(state) }

features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/analytics/AnalyticsSettingsView.kt

@@ -19,12 +19,12 @@ package io.element.android.features.preferences.impl.analytics
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.stringResource
-import androidx.compose.ui.tooling.preview.Preview
+import io.element.android.libraries.designsystem.preview.ElementPreviews
 import androidx.compose.ui.tooling.preview.PreviewParameter
 import io.element.android.features.analytics.api.preferences.AnalyticsPreferencesView
 import io.element.android.libraries.designsystem.components.preferences.PreferenceView
+import io.element.android.libraries.designsystem.preview.ElementPreview
 import io.element.android.libraries.designsystem.preview.ElementPreviewDark
-import io.element.android.libraries.designsystem.preview.ElementPreviewLight
 import io.element.android.libraries.ui.strings.CommonStrings
 
 @Composable
@@ -44,12 +44,13 @@ fun AnalyticsSettingsView(
     }
 }
 
-@Preview
+@ElementPreviews
 @Composable
-fun AnalyticsSettingsViewLightPreview(@PreviewParameter(AnalyticsSettingsStateProvider::class) state: AnalyticsSettingsState) =
-    ElementPreviewLight { ContentToPreview(state) }
+fun AnalyticsSettingsViewLightPreview(@PreviewParameter(AnalyticsSettingsStateProvider::class) state: AnalyticsSettingsState) {
+    ElementPreview { ContentToPreview(state) }
+}
 
-@Preview
+@ElementPreviews
 @Composable
 fun AnalyticsSettingsViewDarkPreview(@PreviewParameter(AnalyticsSettingsStateProvider::class) state: AnalyticsSettingsState) =
     ElementPreviewDark { ContentToPreview(state) }

features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/developer/DeveloperSettingsView.kt

@@ -19,14 +19,14 @@ package io.element.android.features.preferences.impl.developer
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.res.stringResource
-import androidx.compose.ui.tooling.preview.Preview
+import io.element.android.libraries.designsystem.preview.ElementPreviews
 import androidx.compose.ui.tooling.preview.PreviewParameter
 import io.element.android.features.rageshake.api.preferences.RageshakePreferencesView
 import io.element.android.libraries.designsystem.components.preferences.PreferenceCategory
 import io.element.android.libraries.designsystem.components.preferences.PreferenceText
 import io.element.android.libraries.designsystem.components.preferences.PreferenceView
+import io.element.android.libraries.designsystem.preview.ElementPreview
 import io.element.android.libraries.designsystem.preview.ElementPreviewDark
-import io.element.android.libraries.designsystem.preview.ElementPreviewLight
 import io.element.android.libraries.featureflag.ui.FeatureListView
 import io.element.android.libraries.featureflag.ui.model.FeatureUiModel
 import io.element.android.libraries.ui.strings.CommonStrings
@@ -88,12 +88,13 @@ fun FeatureListContent(
     )
 }
 
-@Preview
+@ElementPreviews
 @Composable
-fun DeveloperSettingsViewLightPreview(@PreviewParameter(DeveloperSettingsStateProvider::class) state: DeveloperSettingsState) =
-    ElementPreviewLight { ContentToPreview(state) }
+fun DeveloperSettingsViewLightPreview(@PreviewParameter(DeveloperSettingsStateProvider::class) state: DeveloperSettingsState) {
+    ElementPreview { ContentToPreview(state) }
+}
 
-@Preview
+@ElementPreviews
 @Composable
 fun DeveloperSettingsViewDarkPreview(@PreviewParameter(DeveloperSettingsStateProvider::class) state: DeveloperSettingsState) =
     ElementPreviewDark { ContentToPreview(state) }

features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/root/PreferencesRootView.kt

@@ -34,8 +34,8 @@ import io.element.android.features.logout.api.LogoutPreferenceView
 import io.element.android.features.preferences.impl.user.UserPreferences
 import io.element.android.libraries.designsystem.components.preferences.PreferenceText
 import io.element.android.libraries.designsystem.components.preferences.PreferenceView
+import io.element.android.libraries.designsystem.preview.ElementPreview
 import io.element.android.libraries.designsystem.preview.ElementPreviewDark
-import io.element.android.libraries.designsystem.preview.ElementPreviewLight
 import io.element.android.libraries.designsystem.preview.LargeHeightPreview
 import io.element.android.libraries.designsystem.theme.components.Divider
 import io.element.android.libraries.designsystem.theme.components.Text
@@ -115,8 +115,9 @@ fun DeveloperPreferencesView(onOpenDeveloperSettings: () -> Unit) {
 
 @LargeHeightPreview
 @Composable
-fun PreferencesRootViewLightPreview(@PreviewParameter(MatrixUserProvider::class) matrixUser: MatrixUser) =
-    ElementPreviewLight { ContentToPreview(matrixUser) }
+fun PreferencesRootViewLightPreview(@PreviewParameter(MatrixUserProvider::class) matrixUser: MatrixUser) {
+    ElementPreview { ContentToPreview(matrixUser) }
+}
 
 @LargeHeightPreview
 @Composable

features/preferences/impl/src/main/kotlin/io/element/android/features/preferences/impl/user/UserPreferences.kt

@@ -18,10 +18,10 @@ package io.element.android.features.preferences.impl.user
 
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
-import androidx.compose.ui.tooling.preview.Preview
+import io.element.android.libraries.designsystem.preview.ElementPreviews
 import androidx.compose.ui.tooling.preview.PreviewParameter
+import io.element.android.libraries.designsystem.preview.ElementPreview
 import io.element.android.libraries.designsystem.preview.ElementPreviewDark
-import io.element.android.libraries.designsystem.preview.ElementPreviewLight
 import io.element.android.libraries.matrix.api.user.MatrixUser
 import io.element.android.libraries.matrix.ui.components.MatrixUserHeader
 import io.element.android.libraries.matrix.ui.components.MatrixUserWithNullProvider
@@ -37,12 +37,13 @@ fun UserPreferences(
     )
 }
 
-@Preview
+@ElementPreviews
 @Composable
-internal fun UserPreferencesLightPreview(@PreviewParameter(MatrixUserWithNullProvider::class) matrixUser: MatrixUser?) =
-    ElementPreviewLight { ContentToPreview(matrixUser) }
+internal fun UserPreferencesLightPreview(@PreviewParameter(MatrixUserWithNullProvider::class) matrixUser: MatrixUser?) {
+    ElementPreview { ContentToPreview(matrixUser) }
+}
 
-@Preview
+@ElementPreviews
 @Composable
 internal fun UserPreferencesDarkPreview(@PreviewParameter(MatrixUserWithNullProvider::class) matrixUser: MatrixUser?) =
     ElementPreviewDark { ContentToPreview(matrixUser) }