feat: added Stale action

.github/workflows/stale.yml

@@ -0,0 +1,23 @@
+name: Mark Stale Issues and Pull Requests
+on:
+  schedule:
+    - cron: "0 0 * * *"
+jobs:
+  stale:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/stale@v1
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          stale-issue-message: >
+            Please reopen this issue once you add more information and updates here.
+            If this is not the case and you need some help, feel free to seek help
+            from our [Slack Community](https://www.webiny.com/slack) or ping one of the
+            reviewers. Thank you for your contributions!
+          stale-pr-message: >
+            Please reopen this pull request once you commit the changes requested
+            or make improvements on the code. If this is not the case and you need
+            some help, feel free to seek help from our [Slack Community](https://www.webiny.com/slack)
+            or ping one of the reviewers. Thank you for your contributions!
+          stale-issue-label: "no-issue-activity"
+          stale-pr-label: "no-pr-activity"