* feat(checker): new component checker

* test(checker): init checker test

* refactor(demo): add checker

* docs(checker): init checker docs

* refactor(checker): remove console

* test(checker): fix radio test

* fix(checker): radio & checkbox type active condition

* fix(checker): radio condition error

* refactor(example): checker router component path err

* test(checker): fix test

* add checker disabled

* add checker disabled document

* 修改checker文档

* 修改缩进

* 修改test