chore: Add welcome new contributors CI (#82)

* chore: Add welcome new contributors CI

Signed-off-by: kramaranya <kramaranya15@gmail.com>

* Add community links to welcome CI

Signed-off-by: kramaranya <kramaranya15@gmail.com>

* Add slack channels to CI

Signed-off-by: kramaranya <kramaranya15@gmail.com>

---------

Signed-off-by: kramaranya <kramaranya15@gmail.com>

Author: kramaranya

.github/workflows/welcome-new-contributors.yaml

@@ -0,0 +1,32 @@
+name: Welcome new contributors
+
+on:
+  pull_request_target:
+    types:
+      - opened
+
+jobs:
+  welcome:
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+    steps:
+      - uses: actions/first-interaction@v3
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          pr-message: |
+            🎉 **Welcome to the Kubeflow SDK!** 🎉
+
+            Thanks for opening your first PR! We're happy to have you as part of our community 🚀
+
+            **Here's what happens next:**
+
+            - If you haven't already, please check out our [Contributing Guide](https://github.com/kubeflow/sdk/blob/main/CONTRIBUTING.md) for repo-specific guidelines and the [Kubeflow Contributor Guide](https://www.kubeflow.org/docs/about/contributing/) for general community standards
+            - Our team will review your PR soon! cc @kubeflow/kubeflow-sdk-team
+
+            **Join the community:**
+            - **Slack**: Join our [#kubeflow-ml-experience](https://www.kubeflow.org/docs/about/community/#kubeflow-slack-channels) and [#kubeflow-trainer](https://www.kubeflow.org/docs/about/community/#kubeflow-slack-channels) Slack channels
+            - **Meetings**: Attend the [Kubeflow SDK and ML Experience](https://bit.ly/kf-ml-experience) bi-weekly meetings
+
+            Feel free to ask questions in the comments if you need any help or clarification!
+            Thanks again for contributing to Kubeflow! 🙏