Fixes#10
Adds toggles to disable direct play of AC3 audio, ASS subtitles, and PGS
subtitles. Also a toggle to force down mixing audio to stereo.
This copies the behavior from the official client. I'm not sure if there
is a way to determine if direct playing AC3 is possible because it can
depend on devices other than the Android TV device such as a sound bar.
So it's up to the user to toggle off support if necessary.
Attribution: This PR uses on [code from the official
client](c775603df4/app/src/main/java/org/jellyfin/androidtv/util/profile/deviceProfile.kt).
Adds a tab to the TV Show & Movie screens which displays the genres in
that library as a grid.
You can select the genre to see the items in that library for the genre.
This PR also adds backend changes for further filtering to implement
#13.
