This extends the collection with support for seamless authentication at the Jitsi server using Matrix OpenID.

1. New role for installing the [Matrix User Verification Service](https://github.com/matrix-org/matrix-user-verification-service)
2. Changes to Jitsi role: Installing Jitsi Prosody Mods and configuring Jitsi Auth
3. Changes to Jitsi and nginx-proxy roles: Serving .well-known/element/jitsi from jitsi.DOMAIN
4. We updated the Jitsi documentation on authentication and added documentation for the user verification service.

Untested

* Changes to allow a user to set the max participants on a jitsi
conference

* changed var name from jitsi_max_participants to matrix_prosody_jitsi_max_participants

* Add task to configure a standalone JVB on a different server

* add missing file

* set nginx config

* update prosody file and expose port 5222

* change variable name to server id

* formatting change

* use server id of jvb-1 for the main server

* adding documentation

* adding more jvbs

* rename variable

* revert file

* fix yaml error

* minor doc fixes

* renaming tags and introducing a common tag

* remove duplicates

* add mapping for jvb to hostname/ip

* missed a jvb_server

* Update roles/matrix-nginx-proxy/templates/nginx/conf.d/matrix-jitsi.conf.j2

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

* PR review comments and additional documentation

* iterate on dict items

* Update docs/configuring-playbook-jitsi.md

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

* Update docs/configuring-playbook-jitsi.md

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

* Update docs/configuring-playbook-jitsi.md

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

* Update docs/configuring-playbook-jitsi.md

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

* Update docs/configuring-playbook-jitsi.md

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

* Update docs/configuring-playbook-jitsi.md

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

* Update docs/configuring-playbook-jitsi.md

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

* adding documentation around the xmpp setting

* add common after

* reduce the number of services during init of the additional jvb

* remove rogue i

* revert change to jitsi init as it's needed

* only run the jvb service on the additional jvb host

* updating docs

* reset default and add documentation about the websocket port

* fix issue rather merge with master

* add missing role introduced in master

* this role is required too

* Adding new jitsi jvb playbook, moving setup.yml to matrix.yml and creating soft link

* updating documentation

* revert accidental change to file

* add symlink back to roles to aid running of the jitsi playbook

* Remove extra space

* Delete useless playbooks/roles symlink

* Remove blank lines

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

* Jitsi control sentry dns using vars

* renaming variables

* Revert "renaming variables"

This reverts commit 4146c48f6a.

* set to connection string or 0 to disable

* Update comments

* Use empty string for default Sentry DSN variables

Both should work identically, but an empty string seems better

Co-authored-by: Slavi Pantaleev <slavi@devture.com>

This paves the way for installing other roles into `roles/galaxy` using `ansible-galaxy`,
similar to how it's done in:

- https://github.com/spantaleev/gitea-docker-ansible-deploy
- https://github.com/spantaleev/nextcloud-docker-ansible-deploy

In the near future, we'll be removing a lot of the shared role code from here
and using upstream roles for it. Some of the core `matrix-*` roles have
already been extracted out into other reusable roles:

- https://github.com/devture/com.devture.ansible.role.postgres
- https://github.com/devture/com.devture.ansible.role.systemd_docker_base
- https://github.com/devture/com.devture.ansible.role.timesync
- https://github.com/devture/com.devture.ansible.role.vars_preserver
- https://github.com/devture/com.devture.ansible.role.playbook_runtime_messages
- https://github.com/devture/com.devture.ansible.role.playbook_help

We just need to migrate to those.