chore: tag PRs with size labels

[Pr0methean]

Will help reviewers pick PRs we can review when we have limited time or energy.

[gemini-code-assist]

Note

Gemini is unable to generate a review for this pull request due to the file types involved not being currently supported.

[stepsecurity-app]

Security Policy Alert: Actions Policy Violation

This workflow run has been blocked by StepSecurity's actions policy.

Disallowed Actions:

• codelytv/pr-size-labeler@095a41fca88b8764fd9e008ad269bcdb82bb38b9

To fix this issue, please modify the workflow to use only allowed actions. Contact your organization administrator to request changes to the allowed actions list if needed.

For more information, see StepSecurity's Actions Policy documentation.

[amazon-q-developer]

Review Summary

This PR adds a GitHub Actions workflow to automatically label pull requests based on their size, which aligns with the stated goal of helping reviewers prioritize PRs.

Title Compliance: ✅ The PR title "chore: tag PRs with size labels" conforms to Conventional Commits with the correct type prefix.

Critical Issues:

1. Security consideration: The third-party action should be verified before merging, as it has write permissions to pull requests
2. Missing newline: The file should end with a newline character per POSIX standards

The workflow configuration itself appears functional with reasonable size thresholds and appropriate file exclusions for test data and changelog.

---

You can now have the agent implement changes and create commits directly on your pull request's source branch. Simply comment with /q followed by your request in natural language to ask the agent to make changes.