Re-Add Jellyfin

[kubo6472]

Is your feature request related to a problem? Please describe.
No, just unsupported sw.

Describe the solution you'd like
Per #3 and rivenmedia/riven#715 please re-add jellyfin support.

Describe alternatives you've considered
Using riven directly.

Additional context
Nope.

[I-am-PUID-0]

DMB should still support Jellyfin. There just won't be JF related envs for setting the address and API key. Those would be set with the Riven fronted, settings.json, or riven envs.

[kubo6472]

Since riven frontend does not have these options, yet. The only way is through the settings.json of the riven backend. But thank you!

[I-am-PUID-0]

True, the frontend is trailing behind the backend. You can also set it with riven envs: https://github.com/I-am-PUID-0/DMB/wiki/Riven#riven-settingsjson-file

[AdaptCharm]

+1

[I-am-PUID-0]

This should also be achievable with the existing Riven environment variables

RIVEN_JELLYFIN_API_KEY=
RIVEN_JELLYFIN_URL=