support issue_comment, label and workflow_dispatch triggers for issue triage

This commit adds supports for all needed triggers for issue triage workflows.

Co-authored-by: aliciatang07 [email protected]

Author: JeromeJu

examples/gemini-issue-automated-triage.yml

@@ -3,6 +3,16 @@ name: Gemini Automated Issue Triage
 on:
   issues:
     types: [opened, reopened]
+  issue_comment:
+    types: [created]
+  label:
+    types: [created, edited, deleted]
+  workflow_dispatch:
+    inputs:
+      issue_number:
+        description: 'issue number to triage'
+        required: true
+        type: number
 
 jobs:
   triage-issue: