[Help Wanted]: Pre-Config Option to Disable Non-Copilot Features

### Before Reporting

- [X] I have checked FAQ, and there is no solution to my issue
- [X] I have searched the existing issues, and there is no existing issue for my issue

### Describe your issue

Do we have a way to choose only only coding service and disable others? Example: In an organization only supports CoPilot enterprise service but not other services (Codedium and ChatGPT).

Thanks for the suggestion.

Start by locating the configuration or settings entry points that control the available coding services, then inspect how Copilot, Codeium, and ChatGPT are enabled. Done means an organization can keep Copilot enabled while disabling the other services through configuration.

索引モデルが issue の本文から書いたものです。