feat: Add a workflow for greetings when users first interactive with …

…repo (#3175)

#### Summary
This PR is based on the issue #3161 

####

.github/workflows/greetings.yml

@@ -0,0 +1,15 @@
+name: Greetings
+
+on: [pull_request_target, issues]
+
+jobs:
+  greeting:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/first-interaction@v1
+        with:
+          repo-token: ${{ secrets.GITHUB_TOKEN }}
+          issue-message: |
+            Thanks for reporting this issue 👍  
+            You can reach us via [Discord](https://www.cloudquery.io/discord) too. 
+            If you enjoy using this project, please consider starring it for support