Support HLS streaming

[0xDebabrata]

• Create a pipeline for converting user-uploaded videos to appropriate HLS format for streaming.
• Support HLS streaming in the frontend video player.

Benefits:

• Ensures all user-uploaded files will be playable on Fireplace. Currently only .mp4 and some other formats play well in the browser, while other formats fail to work.
• Video resolution will automatically change depending on user's internet bandwidth. Ensures smoother playback and less sync issues where user A buffers but playback continues for user B