add tags

CloudronManifest.json

@@ -22,5 +22,6 @@
     "https://raw.githubusercontent.com/cloudron-io/nodebb-app/e35814fa56fb881d0e28bf71681e63a11bd12740/screenshots/3.png"
   ],
   "memoryLimit": 524288000,
-  "changelog": "file://CHANGELOG"
+  "changelog": "file://CHANGELOG",
+  "tags": [ "forum", "collaboration", "community", "discourse", "bb" ]
 }