[PoC] [WIP] Matterbridge integration

[julien-nc]

Hey! Here is a proof-of-concept that integrates matterbridge into Talk.

@gary-kim has recently implemented NC Talk compatibility to Matterbridge, which makes it possible to bridge it with many other instant messaging systems (centralized and distributed ones).

Matterbridge binary needs can be installed from https://apps.nextcloud.com/apps/talk_matterbridge

There's a new "bridge" section in the settings tab of the right sidebar for room moderators that lets them configure bridge parts.

Server side generates a bridge config file and runs the binary which connects to each parts of the bridge. The process is launched by the web server user and runs in the background. Its PID is stored and used to kill it when a moderator disables the bridge.

TODO:

• make it work
• choose where to trigger checks to potentially relaunch dead bridges or kill zombie ones (checks are implemented)
• improve bridge state display in UI. only the "desired state" is shown for the moment. we could show the log file content.
• make it safer with more checks when launching the process.
• write config and log files in appdata (or somewhere else). currently written in /tmp

[julien-nc]

@nickvergessen Thanks a lot for the review.

[nickvergessen]

Binary repo is at https://github.com/nextcloud/talk_matterbridge

[nickvergessen]

How installing looks:

[nickvergessen]

Doesn't break the rest and should work as per Julien