close stale questions (#465)

Author: samuelcolvin

.github/workflows/stale.yml

@@ -0,0 +1,19 @@
+name: 'Close stale issues'
+on:
+  schedule:
+    - cron: '0 14 * * *'
+
+permissions:
+  issues: write
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v9
+        with:
+          stale-issue-message: 'This issue is stale, and will be closed in 3 days if no reply is received.'
+          close-issue-message: 'Closing this issue as it has been inactive for 10 days.'
+          any-of-labels: 'question,more info'
+          days-before-stale: 7
+          days-before-close: 3