Add support for external player - mpvRx, only player

[sam-reza]

Describe your suggested feature

mpvRx more updated, + more refined/optimized features, + regular updated than mpvEx.

https://github.com/Riteshp2001/mpvRx

Only Player:
Next Player ++

https://github.com/Kindness-Kismet/only_player

Other details

...

Acknowledgements

• My suggestion is NOT about adding a new provider
• I have searched the existing issues and this is a new ticket, NOT a duplicate or related to another open issue.

[uzuto]

Please add mpv-nova for Android TV as well