Adding new github workflow for stale issues

Adding a Github workflow that will mark issues that didn't have any activity on them for the last 60 days and put a label of stale on them. After 7 days if the stale issue didn't have any updates the issue will be deleted.

.github/workflows/stale.yaml

@@ -0,0 +1,16 @@
+name: 'Close stale issues'
+on:
+  schedule:
+    - cron: '30 1 * * *'
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v4
+        with:
+          stale-issue-message: 'This issue is stale because it has been open 60 days with no activity. Remove stale label or comment or this will be closed in 7 days.'
+          close-issue-message: 'This issue was closed because it has been stalled for 5 days with no activity.'
+          days-before-stale: 60
+          days-before-close: 7
+