refactor: auto-generate openapi doc for geohub endpoints

[JinIgarashi]

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Description

closes #4732

To do list

• continents
• countries
• datasets (on-going)
• licenses
• mapstyle
• menu
• products
• regions
• settings
• stac
• storymaps
• style
• tags
• token
• users
• vector

Type of Pull Request

• Adding a feature
• Fixing a bug
• Maintaining documents
• Adding tests
• Others ()

Verify the followings

• Code is up-to-date with the develop branch
• No build errors after pnpm build
• No lint errors after pnpm lint
• Run the tests with pnpm test and lint the project with pnpm lint and pnpm check
• Make sure all the existing features working well

Changesets

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Refer to CONTRIBUTING.MD for more information.

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