Support for custom headers

[steinxborg]

Support for custom header like this:
#EXTINF:-1 tvg-id="FOX BUSINESS" ,FOX BUSINESS (Stream 1)
#EXTVLCOPT:http-origin=https://live-streamfootball.com
#EXTVLCOPT:http-referrer=https://live-streamfootball.com/
#EXTVLCOPT:http-user-agent=Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36
https://livecdn-iptv001.rumsport.com/livetv2/1369/index.m3u8

Without the headers, stream will result in 403 error.

[oxyroid]

It is hard to adapt all the protocols, we decided to introduce an extension system in the future. We will also place some hooks(user-agent, custom parser rule etc.) at certain places in the software execution.

[oxyroid]

@oxyroid https://github.com/oxyroid/M3UAndroid/discussions/206