Chat Federation (and a lot more) WIP:

Note: websocket s2s is not working yet, still WIP.

New Features

* Chat Federation:
  * You can now connect to a remote chat with your local account.
  * This remote connection is done using a custom implementation of [XEP-0468: WebSocket S2S](https://xmpp.org/extensions/xep-0468.html), using some specific discovering method (so that it will work without any DNS configuration).

Minor changes and fixes

* Possibility to debug Prosody in development environments.
* Using process.spawn instead of process.exec to launch Prosody (safer, and more optimal).
* Prosody AppImage: fix path mapping: we only map necessary /etc/ subdir, so that the AppImage can access to /etc/resolv.conf, /etc/hosts, ...
* Prosody AppImage: hidden debug mode to disable lua-unbound, that seems broken in some docker dev environments.

server/lib/federation/incoming.ts

@@ -1,6 +1,6 @@
 import type { RegisterServerOptions } from '@peertube/peertube-types'
 import type { RemoteVideoHandlerParams } from './types'
-import { storeVideoLiveChatInfos } from './storage'
+import { storeVideoLiveChatInfos, storeRemoteServerInfos } from './storage'
 import { sanitizePeertubeLiveChatInfos } from './sanitize'
 
 /**
@@ -19,6 +19,9 @@ async function readIncomingAPVideo (
   peertubeLiveChat = sanitizePeertubeLiveChatInfos(peertubeLiveChat)
 
   await storeVideoLiveChatInfos(options, video, peertubeLiveChat)
+  if (video.remote) {
+    await storeRemoteServerInfos(options, peertubeLiveChat)
+  }
 }
 
 export {