Feature/february changes (#271)
* Fixed deprecated resizeToAvoidBottomPadding
* Fixed playing large videos in iOS, added 0.0.50 release changes
* Added hls audio selection
* Added hls audio selection, refactored code, added documentation
* HLS audio track implementation
* HLS audio track implementation
* HLS audio track implementation
* HLS audio track implementation
* HLS audio track implementation
* HLS audio track implementation
* HLS audio track implementation
* Added backgroundColor parameter in BetterPlayerControlsConfiguration
* Fixed finished event creation.
* Fixed automatic playing/pausing
* Fixed automatic playing/pausing
* Dartfmt update
* Updated buttons
* Fixed audio track selection issue
Co-authored-by: jhomlala <j.homlala@gmail.com>
