Allow media providers to reuse existing JS providers

[blazsolar]

As mentioned in #8 we should add possibility to reuse JS media providers in android app. This will probably not be as preferment as native implementations but would be convenient and allow someone that is not familiar with android development to provide android version easily alongside desktop version.

Writing native providers should still be the base for the app since performance of JS providers is questionable.

[se-bastiaan]

This would most likely help: https://github.com/LiquidPlayer/LiquidCore
Works pretty well.