Android TV support

[MattiasBuelens]

We need to test and optimize the new UI for smart TVs running Android TV or Fire TV.

• The default UI should adjust its layout for bigger screens, possibly moving some controls around.
• All UI components should be navigable using a TV remote. Ideally, users don't have to change their custom UIs for this to work.

Jetpack Compose has an androidx.tv library which might be of interest.

[OlegRyz]

Some controls are reacheable on Android TV, but it's practically unusable via remote

The issues I bumped into just for record:

• after UI disappears during playback it's not possible to navigate back to UI controls using remote
• not possible to seek using remote

[MattiasBuelens]

androidx.tv:tv-material finally has a stable 1.0.0 release, so maybe we can actually start building this?

[MattiasBuelens]

We may want to steal some ideas from Media3 Compose, and extract "state holders" from our existing composables. That way, we can re-use these state holders for both the "regular" and "TV" composables. 😉