feat: add GitHub Actions workflows for code quality and automation (#2)

.github/workflows/stale.yml

@@ -1,18 +1,52 @@
 ---
+# yaml-language-server: $schema=https://json.schemastore.org/github-workflow.json
 name: Stale
 
 on:
   schedule:
-    - cron: "0 8 * * *"
+    - cron: '0 8 * * *'
   workflow_call:
   workflow_dispatch:
 
+permissions:
+  contents: read
+  packages: read
+  statuses: read
+
 jobs:
   stale:
+    name: 🧹 Clean up stale issues and PRs
+    runs-on: ubuntu-latest
+
     permissions:
-      contents: write
+      contents: write # only for delete-branch option
       issues: write
       pull-requests: write
-      packages: read
-      statuses: read
-    uses: ivuorinen/.github/.github/workflows/stale.yml@main
+
+    steps:
+      - name: 🚀 Run stale
+        uses: actions/stale@v9.1.0
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          days-before-stale: 30
+          days-before-close: 7
+          remove-stale-when-updated: true
+          stale-issue-label: 'stale'
+          exempt-issue-labels: 'no-stale,help-wanted'
+          stale-issue-message: >
+            There hasn't been any activity on this issue recently, so we
+            clean up some of the older and inactive issues.
+
+            Please make sure to update to the latest version and
+            check if that solves the issue. Let us know if that works for you
+            by leaving a comment 👍
+
+            This issue has now been marked as stale and will be closed if no
+            further activity occurs. Thanks!
+          stale-pr-label: 'stale'
+          exempt-pr-labels: 'no-stale'
+          stale-pr-message: >
+            There hasn't been any activity on this pull request recently. This
+            pull request has been automatically marked as stale because of that
+            and will be closed if no further activity occurs within 7 days.
+            Thank you for your contributions.