Raise exception on not-implemented @setting(setter) (#1591)

Split out from #1586
warn for setter input from setting decorator, since it will not work to
put in a function directly in the decorator since the class object has
not yet been created. Therefore always the setter_name schould be used
and the binding of the setter methods schould take place when the class
object gets created.

Co-authored-by: Teemu R. <tpr@iki.fi>

Author: starkillerOG

miio/devicestatus.py

@@ -201,7 +201,11 @@ def decorator_setting(func):
         qualified_name = str(func.__qualname__)
 
         if setter is None and setter_name is None:
-            raise Exception("Either setter or setter_name needs to be defined")
+            raise Exception("setter_name needs to be defined")
+        if setter_name is None:
+            raise NotImplementedError(
+                "setter not yet implemented, use setter_name instead"
+            )
 
         common_values = {
             "id": qualified_name,