Added Github workflow to clear old issues and PRs

.github/workflows/stale.yml

@@ -0,0 +1,24 @@
+name: 'Close stale issues and PRs'
+on:
+    schedule:
+        - cron: '30 1 * * *'
+
+jobs:
+    stale:
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/stale@v9
+              with:
+                  stale-issue-message: 'This issue is stale because it has been open 45 days with no activity. Remove stale label or comment or this will be closed in 15 days.'
+                  stale-pr-message: 'This PR is stale because it has been open 45 days with no activity. Remove stale label or comment or this will be closed in 20 days.'
+                  close-issue-message: 'This issue was closed because it has been stalled for 15 days with no activity.'
+                  close-pr-message: 'This PR was closed because it has been stalled for 20 days with no activity.'
+                  days-before-issue-stale: 45
+                  days-before-pr-stale: 45
+                  days-before-issue-close: 15
+                  days-before-pr-close: 20
+                  stale-issue-label: 'no-issue-activity'
+                  exempt-issue-labels: 'pending,work-in-progress,bug'
+                  stale-pr-label: 'no-pr-activity'
+                  exempt-pr-labels: 'awaiting-approval,work-in-progress,bug'
+                  repo-token: ${{ secrets.GITHUB_TOKEN }}