add chinese version file for frontend/collector/bpf

[haolipeng]

Description

Add Chinese version documentation/localization files for the following modules:

• frontend
• collector
• bpf

This change provides Chinese (zh-CN) language support to improve accessibility for Chinese-speaking users and contributors.

Fixes # (issue)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

• Verified that the newly added Chinese version files are correctly formatted and consistent with their English counterparts.
• Confirmed that no existing files or functionality are affected by this addition.

Test Configuration:

• N/A (documentation/localization change only)

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published in downstream modules
• I have checked my code and corrected any misspellings