Room list contextual menu (#427)

- Adds `ModalBottomSheet` to our design components (it wraps the homonimous Material3 one).
- Adds  a bottom sheet to the Room list using the aforementioned design component.
- Adds navigation from the room list to a room detail (context menu "Settings" action).
- Consolidates the "leave room flow" into a new `leaveroom` module used by both the room list and the room details.
  - Adds progress indicator to the leave room flow
- Uses new `leaveroom` module in `roomdetails` module too. 

Parent issue:
- https://github.com/vector-im/element-x-android/issues/261

libraries/designsystem/src/main/res/drawable/ic_door_open_24.xml

@@ -0,0 +1,10 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="960"
+    android:viewportHeight="960"
+    android:tint="#000000">
+  <path
+      android:fillColor="@android:color/white"
+      android:pathData="M440,520Q457,520 468.5,508.5Q480,497 480,480Q480,463 468.5,451.5Q457,440 440,440Q423,440 411.5,451.5Q400,463 400,480Q400,497 411.5,508.5Q423,520 440,520ZM280,840L280,760L520,720L520,275Q520,260 511,248Q502,236 488,234L280,200L280,120L500,156Q544,164 572,197Q600,230 600,274L600,786L280,840ZM120,840L120,760L200,760L200,200Q200,166 223.5,143Q247,120 280,120L680,120Q714,120 737,143Q760,166 760,200L760,760L840,760L840,840L120,840ZM280,760L680,760L680,200Q680,200 680,200Q680,200 680,200L280,200Q280,200 280,200Q280,200 280,200L280,760Z"/>
+</vector>