Adds option to change the decoder used by the player

[susonthapa]

Changes
This PR adds an option to change between Hardware and Software decoding. When this option is changed the current player is recreated with the new decoder. We are using the mediaCodecSelector to control which decoder we want to select for the particular codec. The property MediaCodecInfo.hardwareAccelerated should be taken with a grain of salt.

Issues
Closes #760

[susonthapa]

I did a quick test on both the emulator and the real device and I got mixed results. This feature works as expected but the actual device might not support decoding the track with the specified decoder but that is more of an ExoPlayer issue than ours. I was thinking of maybe forcing the decoding even if the decoder doesn't support the capabilities(resolutions, profiles) but this turns out to be the default behavior of ExpoPlayer.

Here is a quick demo video on the emulator.

Kapture.2022-11-20.at.09.19.52.mp4

[Maxr1998]

Nice work! I tweaked some small stuff myself already, but still left some other comments for you. Looking forward to merging this once these are addressed.

[susonthapa]

Thanks, @Maxr1998 for taking the time to review the code. I have made the requested changes. Please let me know if I need to change anything.

[Maxr1998]

Thanks, I left some more comments in the threads above. The rest is good now. One last request, I usually prefer line comments to start with an uppercase letter, so I'd appreciate if you could fix that as well. I apologize for being a bit nitpicky, I just prefer consistency 😅

[susonthapa]

I understand @Maxr1998, I would have done the same if I were you. Since I am very new to this repository I will be making a lot of rookie mistakes so feel free to correct me. It will take me some time to get familiar with the coding style and app architecture.

[Maxr1998]

It's ok, I just have relatively specific standards. Some of these style requirements should probably be documented somewhere.

[Maxr1998]

Thanks a lot for your contribution!