Add docs in Chinese (Simplified)

[lnhsingh]

Overview

• Localize docs to Chinese (simplified)

Type of change

Type: New

Checklist

• I have read the contributing guidelines
• I have tested my changes locally using docs dev
• All code examples have been tested and work correctly
• I have used root relative paths for internal links
• I have updated navigation in src/docs.json if needed
• I have gotten approval from the relevant reviewers
• (Internal team members only / optional) I have created a preview deployment using the Create Preview Branch workflow

Additional notes

[github-actions]

Mintlify preview ID generated: preview-cn-1762354545-5678425

[lnhsingh]

Closing for now