remove label waiting for author feedback if issue closes (#484)

Author: fey101

.github/policies/resourceManagement.yml

@@ -83,6 +83,16 @@ configuration:
 
             https://aka.ms/askgraph
     eventResponderTasks:
+    - if:
+      - payloadType: Issues
+      - isAction:
+          action: Closed
+      - hasLabel:
+          label: 'status:waiting-for-author-feedback'
+      then:
+      - removeLabel:
+          label: 'status:waiting-for-author-feedback'
+      description:
     - if:
       - payloadType: Issues
       - and: