On-air Niconama stream links

[AlexAplin]

https://blog.nicovideo.jp/niconews/235926.html

Vasrious funcitons are also changing. Maybe a good time to verify distribution types and write in timeshift support.

[fireattack]

Once the full transition to the new dlive backend is finished, it's trivial to add time-shift support as it just uses standard HLS without any heartbeat shenanigans.

(BTW I believe you meant niconama.)

[AlexAplin]

Working on timeshift support (#11) in #205 but I think we'll need more changes to support on-air.

[AlexAplin]

Repurposing this ticket now, more detail on the PR