[VSC-1510] rm old docs update links

[brianignacio5]

Description

• Remove GitHub documentation in favor of Espressif documentation.
• Update documentation links in README.md
• Add basic setup for zh_CN language build and update CI to include both.

Type of change

• This change requires a documentation update

Steps to test this pull request

Open Preview documentation link in this PR. Review documentation in Chinese.

Test readme links and extension links are updated.

How has this been tested?

Test by click links in read and extension links. Check preview documentation that zh_CN is generated.

Test Configuration:

• ESP-IDF Version: Not relevant
• OS (Windows,Linux and macOS): Not related

Checklist

• PR Self Reviewed
• Applied Code formatting
• Added Documentation
• Added Unit Test
• Verified on all platforms - Windows,Linux and macOS

[github-actions]

Download the artifacts for this pull request:
You can test these changes by installing this VSIX by click menu View -> Command Palette..., type Install from VSIX and then select downloaded esp-idf-extension.vsix file to install the extension.

• esp-idf-extension.vsix.zip
  Espressif documentation preview

[radurentea]

LGTM

[Fabricio-ESP]

All good besides the broken code of conduct link.

[Fabricio-ESP]

@brianignacio5
Additional to your changes, There are some broken links in the "All Available commands" table, making references to files deleted in this PR. PTAL

[Fabricio-ESP]

All looks good now.