build: greet on issue and pull request

Author: AsifArmanRahman

.github/workflows/greetings.yml

@@ -0,0 +1,39 @@
+name: greetings
+
+on: 
+    issues:
+        types:
+            - opened
+
+    issue_comment:
+        types:
+            - created
+
+    pull_request_target:
+        types:
+            - opened
+
+    pull_request_review_comment:
+        types:
+            - created
+
+jobs:
+
+    greeting:
+        runs-on: ubuntu-latest
+
+        permissions:
+            issues: write
+            pull-requests: write
+
+        steps:
+
+            -   uses: actions/first-interaction@v1
+                with:
+                    repo-token: ${{ secrets.GITHUB_TOKEN }}
+
+                    issue-message: |
+                        Hello @${{ github.actor }} , thank you for submitting an issue! A project committer will shortly review the issue.
+
+                    pr-message: |
+                        Thank you @${{ github.actor }} , for contributing to this project, your support is much appreciated. A project committer will shortly review your contribution.