Option to enter and leave Picture In Picture

[KyleSmith0905]

Awesome library btw.

I'm in the need of an option to enter and leave picture in picture since I'm using my own custom controls, and only planning on using this library for the picture-in-picture.

Expected Behavior:
So user clicks a button, I call MediaPlayer.enterPictureInPicture({player: 'example'})

When the user enters back into the app, I call MediaPlayer.leavePictureInPicture({player: 'example'})

Thank you! Best of luck!

[KyleSmith0905]

I'm working on temporary code for Android and Web. I can send it over to a branch or something and you can morph it into your vision.

[KyleSmith0905]

I'm not confident in adding this to a pull request yet, but here is the progress I've made (it's working on Android after testing): https://github.com/KyleSmith0905/fork--eduardoRoth--media-player