Ensure prosody plugin path created / permissions

roles/matrix-jitsi/tasks/setup_jitsi_prosody.yml

@@ -14,6 +14,7 @@
   with_items:
     - { path: "{{ matrix_jitsi_prosody_base_path }}", when: true }
     - { path: "{{ matrix_jitsi_prosody_config_path }}", when: true }
+    - { path: "{{ matrix_jitsi_prosody_plugins_path }}", when: true }
   when: matrix_jitsi_enabled|bool and item.when
 
 - name: Ensure jitsi-prosody Docker image is pulled