optimize api docs and build:theme script

[Huangyilin19]

PR

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our Commit Message Guidelines
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Other... Please describe:

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Does this PR introduce a breaking change?

• Yes
• No

Other information

1. 优化api文档中类型一栏的跳转，支持同时存在多个不同类型可点击，例如 （x: string, y: IStepsItem， z: IStepsStatus) => void, 实现y，z的类型可点击跳转到不同地方。
2. 优化 theme打包脚本，自动删除 theme/src目录下aurora-theme和smb-theme子目录。

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