Add comment for PRs from forks to trigger build (#332)

Author: bhavyaus

code-review-chat/CodeReviewChat.js

@@ -349,6 +349,20 @@ export class CodeReviewChat extends Chatter {
 			})(),
 		);
 
+		// Trigger build for forked PRs by adding a comment
+		if (pr.fork) {
+			tasks.push(
+				(async () => {
+					await this.octokit.issues.createComment({
+						owner: this.options.payload.owner,
+						repo: this.options.payload.repo,
+						issue_number: this.pullRequestNumber,
+						body: '/AzurePipelines run',
+					});
+				})(),
+			);
+		}
+
 		await Promise.all(tasks);
 	}
 }