Add stale-prs.yml github workflow

.github/pull_request_template.md

@@ -12,10 +12,11 @@ Please delete options that are not relevant.
 
 - [ ] Bug fix (non-breaking change which fixes an issue)
 - [ ] New feature (non-breaking change which adds functionality)
-- [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
+- [ ] Breaking change (fix or feature that would cause existing functionality to
+      not work as expected)
 - [ ] This change requires a documentation update
 
-# How Has This Been Tested?
+## How Has This Been Tested?
 
 Please describe the tests that you ran to verify your changes. Provide
 instructions so we can reproduce. Please also list any relevant details for your
@@ -24,7 +25,7 @@ test configuration
 - [ ] Test A
 - [ ] Test B
 
-# Checklist:
+## Checklist
 
 - [ ] My code follows the style guidelines of this project
 - [ ] I have commented my code, particularly in hard-to-understand areas

.github/workflows/stale-issues-prs.yml

@@ -0,0 +1,23 @@
+name: "Close stale issues and PRs"
+
+permissions:
+  contents: write # only for delete-branch option
+  issues: write
+  pull-requests: write
+
+on:
+  schedule:
+    - cron: "0 15 * * *"
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v9
+        with:
+          stale-issue-message: 'This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 5 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 10 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: 5