docs: add Chinese (Simplified) translation for README

[unitagain]

• Add language switcher buttons to README.md
• Create README.zh-CN.md with complete Chinese translation
• Include all sections: quickstart, setup guides, tech stack, contributing
• Enable bilingual documentation support for Chinese users

[vercel[bot]]

@unitagain is attempting to deploy a commit to the Sim Team on Vercel.

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[greptile-apps[bot]]

Greptile Overview

Greptile Summary

Adds bilingual documentation support by introducing language switcher buttons and a complete Chinese (Simplified) translation of the README.

• Added language selector (English | 简体中文) to both README files for easy navigation
• Created README.zh-CN.md with comprehensive Chinese translation covering all sections
• Translation maintains technical accuracy with appropriate terminology for commands, setup instructions, and technology stack
• All URLs, code snippets, and technical references preserved correctly

Confidence Score: 5/5

• This PR is safe to merge with no risk - it only adds documentation
• This is a documentation-only PR that adds Chinese translation without modifying any functional code, configuration, or build files. The translation is comprehensive and accurate.
• No files require special attention

Important Files Changed

File Analysis

Filename	Score	Overview
README.md	5/5	Added language switcher linking to Chinese translation
README.zh-CN.md	5/5	Complete Chinese translation with all sections accurately translated

Sequence Diagram

sequenceDiagram
    participant Dev as Developer
    participant Repo as Repository
    participant User as Chinese User
    
    Dev->>Repo: Add language switcher to README.md
    Note over Repo: Lines 7-9: English | 简体中文 links
    
    Dev->>Repo: Create README.zh-CN.md
    Note over Repo: Complete Chinese translation<br/>with all sections
    
    User->>Repo: Visit repository
    User->>Repo: Click "简体中文" link
    Repo->>User: Display README.zh-CN.md
    Note over User: Read documentation in Chinese

[unitagain]

@waleedlatif1 requesting for review