setup a bot for PR validation

.github/workflows/PR_message.yml

@@ -0,0 +1,29 @@
+name: PR Validation and Comment Bot
+
+# Trigger the workflow on pull request creation
+on:
+  pull_request:
+    types: [opened]
+
+jobs:
+  check_branch:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check if PR is from main or master
+        run: |
+          if [[ "${{ github.event.pull_request.head.ref }}" == "main" || "${{ github.event.pull_request.head.ref }}" == "master" ]]; then
+            curl -X POST -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
+              -H "Accept: application/vnd.github.v3+json" \
+              https://api.github.com/repos/${{ github.repository }}/issues/${{ github.event.pull_request.number }}/comments \
+              -d '{"body": "### :warning: Warning: Please create a new branch!\n\nIt looks like your pull request is based on the `main` or `master` branch. To keep the repository organized and avoid conflicts, please follow these steps:\n\n1. Close this PR.\n2. Create a new branch using `git checkout -b your-branch-name`.\n3. Make your changes in that branch and open a new PR.\n\nThank you!"}'
+            exit 1
+          fi
+
+      - name: Comment on valid PR
+        if: ${{ success() }}
+        run: |
+          curl -X POST -H "Authorization: token ${{ secrets.GITHUB_TOKEN }}" \
+            -H "Accept: application/vnd.github.v3+json" \
+            https://api.github.com/repos/${{ github.repository }}/issues/${{ github.event.pull_request.number }}/comments \
+            -d '{"body": "### Thank you for opening a Pull Request!\n\nYour contribution is highly appreciated. Please make sure your PR meets the following guidelines:\n\n1. Follow our [contribution guidelines](https://link-to-guidelines).\n2. Ensure all code is properly documented.\n3. Add tests for your new code if applicable.\n\nThank you for your contribution!"}'