Matrix Authentication Support for Jitsi

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.

roles/custom/matrix-jitsi/tasks/util/prosody_post_setup_hooks/setup_jitsi_auth_internal.yml

@@ -0,0 +1,17 @@
+---
+#
+# Tasks related to configuring Jitsi internal authentication on a running prosody instance.
+#
+
+- name: Ensure Jitsi internal authentication users are configured
+  ansible.builtin.shell: "{{ devture_systemd_docker_base_host_command_docker }} exec matrix-jitsi-prosody prosodyctl --config /config/prosody.cfg.lua register {{ item.username | quote }} meet.jitsi {{ item.password | quote }}"
+  with_items: "{{ matrix_jitsi_prosody_auth_internal_accounts }}"
+  when:
+    - matrix_jitsi_prosody_auth_internal_accounts|length > 0
+  register: matrix_jitsi_user_configuration_result
+  changed_when: matrix_jitsi_user_configuration_result.rc == 0
+  no_log: true
+
+#
+# Tasks related to clean up after configuring internal authentication.
+#