inherit properly

libnymea/interfaces/extendedstatefulgaragedoor.json

@@ -1,11 +1,4 @@
 {
     "description": "A garage door which can be controlled like an extended closable, that is, by reporting and taking a percentage of the position",
-    "extends": ["garagedoor", "extendedclosable"],
-    "states": [
-        {
-            "name": "state",
-            "type": "QString",
-            "allowedValues": ["open", "closed", "opening", "closing", "intermediate"]
-        }
-    ]
+    "extends": ["statefulgaragedoor", "extendedclosable"]
 }