feat: switch to mas for matrix

hosts/fw/modules/web/default.nix

@@ -91,6 +91,7 @@ in
             "/var/lib/zammad"
             "/var/lib/postgresql"
             "/var/lib/n8n"
+            "/var/lib/mas"
             "/var/lib/matrix-synapse"
             "/var/lib/mautrix-whatsapp"
             "/var/lib/mautrix-signal"
@@ -103,6 +104,7 @@ in
 
         environment.systemPackages = with pkgs; [
           vim # my preferred editor
+          matrix-authentication-service # mas-cli for migration
         ];
 
         networking.hostName = hostname;