config: greetings (#1753)

.github/workflows/greetings.yml

@@ -0,0 +1,16 @@
+name: Greetings
+
+on: [pull_request_target, issues]
+
+jobs:
+  greeting:
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write
+      pull-requests: write
+    steps:
+    - uses: actions/first-interaction@v1
+      with:
+        repo-token: ${{ secrets.GITHUB_TOKEN }}
+        issue-message: "Hi 👋. Thank you for submitting your first issue to Homarr. Please ensure that you've provided all nessesary information. You can use the three dots > Edit button to update your post with additional images and information. Depending on the current volume of requests, the team should get in conact with you shortly."
+        pr-message: "Hi 👋. Thank you for making your first contribution to Homarr. Please ensure that you've completed all the points in the TODO checklist. We'll review your changes shortly."