workflow: Check for integration result comment

[siddharthkp]

Add workflow to look at the integration-tests comment on pull requests and update labels.

• This workflow is trigged on issue_comment: [created, edited]
• It checks if there is a comment from integration tests workflow in github/github
• Based on the message format (🟢 or 🔴), it will add integration-tests: passing or integration-tests: failing label
• We can, in the future, choose to fail CI if the comment from integration-tests says failing. Don't want to do that just yet though

Example:

Rollout strategy

• Patch release
• Minor release
• Major release; if selected, include a written rollout or migration plan
• None; if selected, include a brief description as to why

[github-actions]

size-limit report 📦

Path	Size
packages/react/dist/browser.esm.js	98.58 KB (0%)
packages/react/dist/browser.umd.js	98.94 KB (0%)

[primer-integration]

👋 Hi from github/github! Your integration PR is ready: https://github.com/github/github/pull/350056

[primer-integration]

🟢 golden-jobs completed with status success.

[francinelucca]

love it ✨