make addons show under meteor client in mod menu

Author: orangeman

src/main/resources/fabric.mod.json

@@ -21,7 +21,12 @@
     "addon-template.mixins.json"
   ],
   "custom": {
-    "meteor-client:color": "225,25,25"
+    "meteor-client:color": "225,25,25",
+    "modmenu": {
+      "parent": {
+        "id": "meteor-client"
+      }
+    }
   },
   "depends": {
     "java": ">=21",