Create stale.yml

Setup automation to close stale issues to discover what is actually still an issue.

.github/workflows/stale.yml

@@ -0,0 +1,32 @@
+# This workflow warns and then closes issues and PRs that have had no activity for a specified amount of time.
+#
+# You can adjust the behavior by modifying this file.
+# For more information, see:
+# https://github.com/actions/stale
+name: Mark stale issues and pull requests
+
+on:
+  schedule:
+  - cron: '35 10 * * *'
+
+jobs:
+  stale:
+
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+      pull-requests: write
+
+    steps:
+    - uses: actions/stale@v10
+      with:
+        days-before-stale: 90
+        days-before-close: 7
+        stale-issue-message: 'This issue has been automatically marked as stale due to inactivity. If it is still valid please comment within 7 days or it will be auto-closed.'
+        close-issue-message: 'Closing this issue due to prolonged inactivity.'
+        # Disabled PR Closing for now, but pre-staged the settings
+        days-before-pr-stale: -1
+        days-before-pr-close: -1
+        stale-pr-message: "This PR appears to be stale.  If it is still valid please comment within 14 days or it will be auto-closed."
+        close-pr-message: "This PR was closed as stale."
+        exempt-issue-labels: 'keep-open,enhancement,critical,dependencies,documentation'