add label management to stale bot

.github/stale.yml

@@ -12,9 +12,11 @@ onlyLabels: []
 
 # Issues or Pull Requests with these labels will never be considered stale. Set to `[]` to disable
 exemptLabels:
-  - Pinned
-  - Confirmed
-  - Feature Request
+  - confirmed
+  - feature request
+  - critical bug
+  - enhancement
+  - to be checked
 
 # Set to true to ignore issues in a project (defaults to false)
 exemptProjects: false
@@ -43,7 +45,7 @@ markComment: >
 #   Your comment here.
 
 # Limit the number of actions per hour, from 1-30. Default is 30
-limitPerRun: 30
+limitPerRun: 10
 
 # Limit to only `issues` or `pulls`
 # only: issues