chore:added workflow to delete stale branches (#834)

Author: Vikramarjuna

.github/workflows/stale-branches.yaml

@@ -0,0 +1,24 @@
+name: Stale Branches
+on:
+  schedule:
+    - cron: "0 6 * * 1-5"
+
+permissions:
+  issues: write
+  contents: write
+jobs:
+  stale_branches:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Stale Branches
+        uses: crs-k/stale-branches@c6e09a3de1046d68b21eccdca23321d0ec277964 # v7.0.0
+        with:
+          repo-token: "${{ secrets.GITHUB_TOKEN }}"
+          days-before-stale: 120
+          days-before-delete: 180
+          comment-updates: false
+          tag-committer: false
+          stale-branch-label: "stale branch 🗑️"
+          compare-branches: "info"
+          ignore-issue-interaction: true
+          pr-check: true