matrix-roglog: enable MAS self-service registration

Set password_registration_enabled=true, disable email requirement,
password recovery, and registration tokens for now.

argocd/apps/matrix-roglog.yaml

@@ -54,6 +54,14 @@ spec:
                 secretKey: mas
             ingress:
               host: auth.roglog.space
+            additional:
+              0-registration:
+                config: |
+                  account:
+                    password_registration_enabled: true
+                    password_registration_email_required: false
+                    password_recovery_enabled: false
+                    registration_token_required: false
 
           elementWeb:
             ingress: