[Checkbox-v2][Switch]Add new components

[hualf1995]

Description

1. add color tokens needed for checkbox-v2 and switch
2. sync checkbox-v2 and switch from web-code to OSS
3. add ubook stories
4. add unit tests
5. add documents, examples in baseweb doc site
6. bump minor version since this change adds new features

The reasons why I don't directly replace the existing checkbox with checkbox-v2 and switch

1. we still need checkbox in documentation site
2. we don't want to make major version bumped frequently. We can collect new features gradually and remove those deprecated components until we release a new major version.
3. we want the OSS to be consistently synced with web-code (uber internal repo).

OSS.-.Checkbox.and.switch.mov

Scope

Minor: New Feature