Charites v2: Drop support Mapbox, rewrite all to esm module

[smellman]

Thank you for submitting a pull request!

Description

Please describe what you changed briefly.

• Drop support Mapbox and use current MapLibre Style Spec
• Rewrite all module to esm
• Use eslint 9.x

Type of Pull Request

• [x] Adding a feature
• [ ] Fixing a bug
• [x] Maintaining documents
• [ ] Others ()

Verify the followings

• [x] Code is up-to-date with the main branch
• [x] No build errors after npm run build
• [x] No lint errors after npm run lint
• [x] No errors on using charites help globally
• [x] Make sure all the existing features working well
• [ ] Have you added at least one unit test if you are going to add new feature?
• [x] Have you updated documentation?

Refer to CONTRIBUTING.MD for more details.