Ability to provide Github credentials for authenticated API requests

[jjcomer]

Check for existing issues

• [X] Completed

Describe the feature

I currently get an error when trying to download the rust language server. The error is a 403 citing rate limits based on my IP. If we are able to make the GH requests with personal access tokens the rate limits are much higher.

I'd like the ability to add my token for use when making requests to GH.

If applicable, add mockups / screenshots to help present your vision of the feature

No response

[jansol]

Tangentially related, it would be even nicer to not have to make said requests in the first place à la #4978

[adelsz]

👍 This is currently blocking me from using any language servers in Zed.