nixos/prosody: add muc_moderation

nixos/modules/services/networking/prosody.nix

@@ -369,6 +369,11 @@ let
           kick other. Useful in jitsi-meet to kick ghosts.
         '';
       };
+      moderation = mkOption {
+        type = types.bool;
+        default = false;
+        description = "Allow rooms to be moderated";
+      };
 
       # Extra parameters. Defaulting to prosody default values.
       # Adding them explicitly to make them visible from the options
@@ -567,7 +572,7 @@ let
 
       ${lib.concatMapStrings (muc: ''
         Component ${toLua muc.domain} "muc"
-            modules_enabled = {${optionalString cfg.modules.mam ''"muc_mam",''}${optionalString muc.allowners_muc ''"muc_allowners",''} }
+            modules_enabled = {${optionalString cfg.modules.mam ''"muc_mam",''}${optionalString muc.allowners_muc ''"muc_allowners",''}${optionalString muc.moderation ''"muc_moderation",''} }
             name = ${toLua muc.name}
             restrict_room_creation = ${toLua muc.restrictRoomCreation}
             max_history_messages = ${toLua muc.maxHistoryMessages}