add workflow to auto assign author to the opened PR

Author: MUFFANUJ

.github/workflows/auto-assign-pr.yaml

@@ -0,0 +1,26 @@
+name: Auto-assign PR author
+
+on:
+  pull_request:
+    types: [opened]
+
+permissions:
+  pull-requests: write
+
+jobs:
+  assign:
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Assign PR author
+        uses: actions/github-script@v7
+        with:
+          script: |
+            const prAuthor = context.payload.pull_request.user.login;
+            const prNumber = context.payload.pull_request.number;
+
+            await github.rest.issues.addAssignees({
+              owner: context.repo.owner,
+              repo: context.repo.repo,
+              issue_number: prNumber,
+              assignees: [prAuthor],
+            });