A command-line tool to help add new routes or new namespaces

### What feature is it?

Developers can add new routes or command lines through commands. Developers can choose and fill in several templates: Via API, Via HTML, Using puppeteer.

### What problem does this feature solve?

Streamline repetitive development tasks

### Additional description

_No response_

### This is not a duplicated feature request or new RSS proposal

- [X] I have searched [existing issues](https://github.com/DIYgod/RSSHub/issues) to ensure this feature has not already been requested and this is not a [new RSS proposal](https://github.com/DIYgod/RSSHub/issues/new?assignees=&labels=RSS+proposal&template=rss_request_en.yml).