We sometimes see "error   Top-level error, please report:
                  /usr/lib/prosody/util/serialization.lua:38: Can't serialize table: table has multiple references".
This also slows down restarting prosody.

Display name for lobby operations notifications are taken from the list of knocking participants which is available only to moderators. In case of not all moderators the notifications were broken.

* Add hook for create lobby

* Remove duplicated code

* feat: Sends json messages notifying for lobby actions.

* squash: Fixes quotes to be consistent.

* fix: Fixes attempt to call global 'formdecode' (a nil value).

* ref: Rename jitsi_bosh_query_room to jitsi_web_query_room.

This is no longer bosh only and is available for both bosh and websocket sessions.

* feat: Adds feature to disco-info indicating that display name is required.

* feat: Adds option to disable checking whether display name is required.

* ref: Clears auth_token when verification fails.

* squash: Fixing comments.

* squash: Updates to latest lib-jitsi-meet.

* Adding whitelist and move away from using custom field for password.

We re-use room lock for lobby password.

* Make sure we do not run muc-occupant-pre-join for non members only rooms.

* Destroying lobby room, when main room is destroyed or membersonly is disabled.

* Adds destroy reason.

* Clears lobby room instance on destroy.

Fixes problem with on/off/on of lobby feature.

* Add lobby room jid only when members only is on.

* Sends main room jid on lobby destroy.

We can use that in client loggic to auto-join lobby participants to main room as lobby is disabled while waiting.

* fix: Fixes using is_healthcheck_room.

* squash: Enables lobby rooms feature by default.

* chore(deps): Update lib-jitsi-meet, to enable lobby rooms.