[v1.2.1] FluxSource, Downloads, and more

Changes

• Added FluxSource with global cached m3u8 urls improving reliability and extraction speed. This source will get updated with subtitles support, improving the quality of that, and it will add in timestamps for "Skip Intro" functionality in the near future.
• Added downloads feature (still in beta) allowing users to watch content offline.
• UI improvements in video player
• Fixed some miscellaneous bugs
• Fixed live sports loading error