Front: Fix Media Metadata

[Arthi-chaud]

The MediaSessionManager seems to be broken:

This PR provides a fix (there was a mismatch between props of <Video/> and <MediaSessionManager/>)

Additionally, I took the liberty to rework the format of the data passed to <NativeVideo/> and <MediaSessionManager/>:

• We pass the poster (of the movie or the parent show) instead of the thumbnail
• The pass a subtitle, only for episodes, which will be the name of the show
  • Fun fact, NativeVideo actually accept such a prop, didn't know that. For web, it will be considered as the album name

Screenshots

[zoriya]

Thanks for yet another great contribution!