Add PIP in MPV

[waseemhehe]

i m currently working in Mpv player can this pip mode run in Mpv player too i have getting so many issue in Mpv related to PIP. like crash new selected video and other

[mohsenoid]

The Android PiP API isn't stable and you may face random false behaviors, and it gets worse in older versions, but I haven't faced any crashes using it.

Maybe share the logs to investigate more.