Migrate to androidx-media3 video player (#3857)

Behaviour is consistent with previous player except that:

- Swapping apps while a video is playing, and then returning to Tusky,
will keep the seek position in the video instead of returning to the
start
- The controls/media description can be shown by tapping anywhere, not
just on the video itself
- The media description is on-screen for the same duration as the player
controls (5 seconds here, 3 seconds in the previous code)
- The user has options to control the playback speed
- Rotating the device does not squash/stretch the video
- Show the media preview when playing audio-only files

Fixes https://github.com/tuskyapp/Tusky/issues/3329,
https://github.com/tuskyapp/Tusky/issues/3141,
https://github.com/tuskyapp/Tusky/issues/3126,
https://github.com/tuskyapp/Tusky/issues/2753,
https://github.com/tuskyapp/Tusky/issues/3508,
https://github.com/tuskyapp/Tusky/issues/3291

---------

Co-authored-by: mcc <andi.m.mcclure@gmail.com>

app/src/main/java/com/keylesspalace/tusky/di/ActivitiesModule.kt

@@ -94,7 +94,7 @@ abstract class ActivitiesModule {
     @ContributesAndroidInjector(modules = [FragmentBuildersModule::class])
     abstract fun contributesPreferencesActivity(): PreferencesActivity
 
-    @ContributesAndroidInjector
+    @ContributesAndroidInjector(modules = [FragmentBuildersModule::class])
     abstract fun contributesViewMediaActivity(): ViewMediaActivity
 
     @ContributesAndroidInjector