bridge-mautrix-facebook: add option for creating non-federated rooms

roles/matrix-bridge-mautrix-facebook/defaults/main.yml

@@ -33,6 +33,9 @@ matrix_mautrix_facebook_systemd_wanted_services_list: []
 matrix_mautrix_facebook_appservice_token: ''
 matrix_mautrix_facebook_homeserver_token: ''
 
+# Whether or not created rooms should have federation enabled.
+# If false, created portal rooms will never be federated.
+matrix_mautrix_facebook_federate_rooms: true
 
 # Database-related configuration fields.
 #