ci: add issue and pr stale gh action (#197)

.github/labels.yml

@@ -64,6 +64,9 @@
 - name: skip-changelog
   description: Skip pull request from release notes
   color: 964B00
+- name: skip-stale
+  description: Skip issue or pull request to be marked as stale
+  color: 964B50
 - name: wontfix
   description: This will not be worked on
   color: ffffff

.github/workflows/stale.yml

@@ -0,0 +1,27 @@
+name: "Close stale issues and PRs"
+
+on:
+  schedule:
+    - cron: "00 03 * * *"
+
+permissions:
+  issues: write
+  pull-requests: write
+
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v7
+        with:
+          close-issue-message: "This issue has automatically been closed due to no activities."
+          close-pr-message: "This pull-request has automatically been closed due to no activities."
+          stale-issue-message: "This issue has not been updated for a while and will be closed soon."
+          stale-pr-message: "This pull-request has not been updated for a while and will be closed soon."
+          days-before-stale: 60
+          days-before-close: 10
+          exempt-all-milestones: true
+          exempt-issue-labels: skip-stale
+          exempt-pr-labels: skip-stale
+          stale-issue-label: stale
+          stale-pr-label: stale