feat: support component writing by pascal-case

[tazyong]

Types of changes

• [x] New feature
• [ ] Bug fix
• [ ] Documentation change
• [ ] Coding style change
• [ ] Refactoring
• [ ] Performance improvement
• [ ] Test cases
• [ ] Continuous integration
• [ ] Typescript definition change
• [ ] Breaking change

Background and context

Solution

How is the change tested?

Changelog

Changelog(CN)	Changelog(EN)	Related issues
支持组件大驼峰写法	support component writing by pascal-case

Checklist:

• [ ] Provide changelog for relevant changes (e.g. bug fixes and new features) if applicable.
• [ ] Changes are submitted to the appropriate branch (e.g. features should be submitted to feature branch and others should be submitted to master branch)

Other information

由于 volar 对组件 props 提示不友好，需要改为大驼峰写法才能以支持，如：<AButton> 、<AInput> ...，所以需要插件支持这种写法，配合 unplugin-vue-components 插件完整支持模板方式的按需导入。