feat: adding stale workflow

.github/workflows/stale.yml

@@ -0,0 +1,22 @@
+name: Stale
+
+on:
+    schedule:
+        - cron: "0 12 * * *"
+
+    workflow_dispatch:
+
+jobs:
+    label:
+        name: Label
+        runs-on: ubuntu-latest
+        steps:
+            - uses: actions/stale@v3
+              with:
+                  repo-token: ${{ secrets.GITHUB_TOKEN }}
+                  days-before-stale: 3
+                  days-before-close: 7
+                  stale-issue-message: "This issue has been marked as stale due to inactivity and will be closed. Comment anything on this issue to prevent it"
+                  stale-pr-message: "This pull request has been marked as stale due to inactivity and will be closed. Comment anything on this PR to prevent it"
+                  exempt-issue-labels: "No-stale"
+                  exempt-pr-labels: "No-stale"