feat: add contributor pr open comment action

.github/workflows/contributor-open-pr-comment.yml

@@ -0,0 +1,39 @@
+name: PR Merge Comment
+
+on:
+  pull_request:
+    types: [opened]
+
+jobs:
+  post-pr-opened-comment:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+
+      - name: Get and Format Username (PR only)
+        if: github.event_name == 'pull_request'
+        run: |
+          formatted_username=$(echo "${{ github.event.pull_request.user.login }}" | tr '[:upper:]' '[:lower:]' | sed 's/ /-/g')
+          echo "FORMATTED_USERNAME=$formatted_username" >> $GITHUB_ENV
+
+      - name: Create Comment (PR only)
+        if: github.event_name == 'pull_request'
+        uses: actions/github-script@v6
+        with:
+          script: |
+            if (context.payload.pull_request) {
+              const prUser = process.env.FORMATTED_USERNAME;
+              const url = `https://datahub-contributor-cards.vercel.app/${prUser}`;
+              const body = `![Image](https://datahub-contributor-cards.vercel.app/api/og?userId=${{ github.event.pull_request.user.login }})\n\n Hello @${prUser} :smile: \n\n Thank you so much for opening a pull request!\nYou can check out your contributor card and see all your past stats here: [${url}](${url})`;
+              
+              // Create a comment on the PR
+              await github.rest.issues.createComment({
+                owner: context.repo.owner,
+                repo: context.repo.repo,
+                issue_number: context.payload.pull_request.number,
+                body: body
+              });
+            } else {
+              console.log('Not a pull request event.');
+            }