Feature: Request to add Chinese (zh-CN) version of README

[ZMM-zhangmanman]

What feature is it?

I propose adding a README_zh-CN.md file to the root directory of the repository.

What problem does this feature solve?

1. Lowering the Barrier to Entry: A full Chinese README will significantly lower the threshold for new users and developers from the Chinese community to understand the project and begin contributing.
2. Improving User Experience: Many of RSSHub's core users are Chinese speakers. Providing native language documentation enhances their experience and encourages broader usage and evangelism of the project's value (the importance of RSS).

Additional description

I am willing to submit a Pull Request with the translated document immediately upon approval.

This is not a duplicated feature request or new RSS proposal

• I have searched existing issues to ensure this feature has not already been requested and this is not a new RSS proposal.

[ZMM-zhangmanman]

The PR ： #20613

[TonyRL]

Closed in #20613 (comment)