DEV: Use Elements to render API Document

What does this PR do?

Solve #10936 (closed)

Replace Redoc with better performing Elements

Layout

example: Firefish API (stelpolva.moe)

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