feat: make copilot PR description adhere to PR template

[jooyoungseo]

Type: Feature Request

I appreciate the auto-PR description powered by Copilot in the settings:

{
  "githubPullRequests.pullRequestDescription": "Copilot"
}

I was wondering if this could adhere to PR template if that extis. That would be even more useful and a huge time saver.

Extension version: 0.79.2024012510 VS Code version: Code - Insiders 1.86.0-insider (5d344004f839677def958534b58e854a9ae26fd0, 2024-01-26T23:08:41.993Z) OS version: Windows_NT x64 10.0.22631 Modes:

[yj7]

This is will very useful. Upvoting 👍🏻