fix-#229: GitHub actions send guidelines (#365)

.github/workflows/.github/workflows/issue-assigned.yaml

@@ -0,0 +1,24 @@
+name: Issue Assigned Comment
+
+on:
+  issues:
+    types: [assigned]
+
+jobs:
+  comment-on-issue:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Comment on the assigned issue
+      uses: actions/github-script@v6
+      with:
+        script: |
+          const issue_number = context.issue.number;
+          const issue_assignee = context.payload.assignee.login;
+          const contributing_guidelines_url = 'https://github.com/krishnaacharyaa/wanderlust/blob/main/.github/CONTRIBUTING.md';
+          
+          github.rest.issues.createComment({
+            owner: context.repo.owner,
+            repo: context.repo.repo,
+            issue_number: issue_number,
+            body: `Hi @${issue_assignee}, thank you for taking on this issue! Please refer to our [contributing guidelines](${contributing_guidelines_url}) for more information on how to get started.`
+          });