"View only" polls in the timeline (#1031)

* Handle poll events from the sdk

* Render started poll event in the timeline

* Create poll module

* Check poll kind before revealing the results

* Check if user has voted before revealing the results

* Add active poll previews

* Minor cleanup

* Update todos

* Fix CI

* Remove hardcoded string

* Update preview

* changelog file

* Update screenshots

* Use CommonPlurals

* Set poll root view as selectableGroup

* Improve poll result rendering

* Update screenshots

* Add missing showkase processor

* Update screenshots

---------

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

libraries/designsystem/src/main/kotlin/io/element/android/libraries/designsystem/theme/components/LinearProgressIndicator.kt

@@ -0,0 +1,90 @@
+/*
+ * Copyright (c) 2023 New Vector Ltd
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package io.element.android.libraries.designsystem.theme.components
+
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.material3.ProgressIndicatorDefaults
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.graphics.StrokeCap
+import androidx.compose.ui.platform.LocalInspectionMode
+import androidx.compose.ui.tooling.preview.Preview
+import androidx.compose.ui.unit.dp
+import io.element.android.libraries.designsystem.preview.ElementThemedPreview
+import io.element.android.libraries.designsystem.preview.PreviewGroup
+
+@Composable
+fun LinearProgressIndicator(
+    progress: Float,
+    modifier: Modifier = Modifier,
+    color: Color = ProgressIndicatorDefaults.linearColor,
+    trackColor: Color = ProgressIndicatorDefaults.linearTrackColor,
+    strokeCap: StrokeCap = ProgressIndicatorDefaults.LinearStrokeCap,
+) {
+    androidx.compose.material3.LinearProgressIndicator(
+        modifier = modifier,
+        progress = progress,
+        color = color,
+        trackColor = trackColor,
+        strokeCap = strokeCap,
+    )
+}
+
+@Composable
+fun LinearProgressIndicator(
+    modifier: Modifier = Modifier,
+    color: Color = ProgressIndicatorDefaults.linearColor,
+    trackColor: Color = ProgressIndicatorDefaults.linearTrackColor,
+    strokeCap: StrokeCap = ProgressIndicatorDefaults.LinearStrokeCap,
+) {
+    if (LocalInspectionMode.current) {
+        // Use a determinate progress indicator to improve the preview rendering
+        androidx.compose.material3.LinearProgressIndicator(
+            modifier = modifier,
+            progress = 0.75F,
+            color = color,
+            trackColor = trackColor,
+            strokeCap = strokeCap,
+        )
+    } else {
+        androidx.compose.material3.LinearProgressIndicator(
+            modifier = modifier,
+            color = color,
+            trackColor = trackColor,
+            strokeCap = strokeCap,
+        )
+    }
+}
+
+@Preview(group = PreviewGroup.Progress)
+@Composable
+internal fun LinearProgressIndicatorPreview() = ElementThemedPreview(vertical = false) { ContentToPreview() }
+
+@Composable
+private fun ContentToPreview() {
+    Column(verticalArrangement = Arrangement.spacedBy(4.dp)) {
+        // Indeterminate progress
+        LinearProgressIndicator(
+        )
+        // Fixed progress
+        LinearProgressIndicator(
+            progress = 0.90F
+        )
+    }
+}