firefish/.gitlab/merge_request_templates/default.md

What does this PR do?

Contribution Guidelines

By submitting this merge request, you agree to follow our Contribution Guidelines

• This change is reviewed in an issue / This is a minor bug fix
• I agree to follow this project's Contribution Guidelines
• I have made sure to test this pull request
• I have made sure to run pnpm run format before submitting this pull request

If this merge request makes changes to the Firefish API, please update docs/api-change.md

• I updated the document / This merge request doesn't include API changes