Add the option to exempt issues and prs from staleness

Author: chiedo

.github/workflows/60-days-stale-check.yml

@@ -17,4 +17,6 @@ jobs:
         only-labels: 'engineering'
         stale-issue-label: 'stale'
         stale-pr-label: 'stale'
+        exempt-pr-labels: 'never-stale'
+        exempt-issue-labels: 'never-stale'
 

.github/workflows/triage-stale-check.yml

@@ -16,3 +16,5 @@ jobs:
         days-before-stale: 7
         days-before-close: 10
         stale-pr-label: 'stale'
+        exempt-pr-labels: 'never-stale'
+        exempt-issue-labels: 'never-stale'