[Compound] Implement components (Button) (#1021)

* Create `CompoundButton`

* Some fixes

* Lint fixes

* Start replacing existing `Button` usages

* Replace button usages

* Remove previous Button composable

* Rename `CompoundButton` to `Button`

* Fix emphasized button being displayed as Text

* Fix cancel button in `WaitListView`

* Update screenshots

* Add shorthand functions for `OutlinedButton` and `TextButton`

* Add changelog

* Fix wrong size used for emphasized button in dialog

* Create a private `ButtonInternal` implementation with the shared logic.

- Make `ButtonStyle` private.
- Rename `title` to `text`.
- Rename `buttonStyle` and `buttonSize` to just `style` and `size`.

* Fix several warnings and lint issues.

* Update screenshots

---------

Co-authored-by: ElementBot <benoitm+elementbot@element.io>

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

@@ -54,6 +54,7 @@ import io.element.android.libraries.designsystem.preview.ElementPreviewDark
 import io.element.android.libraries.designsystem.preview.ElementPreviewLight
 import io.element.android.libraries.designsystem.text.buildAnnotatedStringWithStyledPart
 import io.element.android.libraries.designsystem.theme.components.Button
+import io.element.android.libraries.designsystem.theme.components.ButtonSize
 import io.element.android.libraries.designsystem.theme.components.Icon
 import io.element.android.libraries.designsystem.theme.components.Text
 import io.element.android.libraries.designsystem.theme.components.TextButton
@@ -188,17 +189,16 @@ private fun AnalyticsOptInFooter(
         modifier = modifier,
     ) {
         Button(
+            text = stringResource(id = CommonStrings.action_ok),
             onClick = onTermsAccepted,
             modifier = Modifier.fillMaxWidth(),
-        ) {
-            Text(text = stringResource(id = CommonStrings.action_ok))
-        }
+        )
         TextButton(
+            text = stringResource(id = CommonStrings.action_not_now),
+            buttonSize = ButtonSize.Medium,
             onClick = onTermsDeclined,
             modifier = Modifier.fillMaxWidth(),
-        ) {
-            Text(text = stringResource(id = CommonStrings.action_not_now))
-        }
+        )
     }
 }