Add first interaction workflow to greet new contributors and users (#1918)

.github/workflows/run-first-interaction.yaml

@@ -0,0 +1,29 @@
+name: first-interaction
+
+on:
+  issues:
+    types: [opened]
+  pull_request:
+    branches: [master]
+    types: [opened]
+
+jobs:
+  check_for_first_interaction:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/first-interaction@main
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          issue-message: |
+            Hello! Thank you for filing an issue.
+
+            The maintainers will triage your issue shortly.
+
+            In the meantime, please take a look at the [troubleshooting guide](https://github.com/actions-runner-controller/actions-runner-controller/blob/master/TROUBLESHOOTING.md) for bug reports.
+            
+            If this is a feature request, please review our [contribution guidelines](https://github.com/actions-runner-controller/actions-runner-controller/blob/master/CONTRIBUTING.md).
+          pr-message: |
+            Hello! Thank you for your contribution.
+
+            Please review our [contribution guidelines](https://github.com/actions-runner-controller/actions-runner-controller/blob/master/CONTRIBUTING.md) to understand the project's testing and code conventions.