Perform host provider auto-detection only once per host

[gpakosz]

This issue is a follow up on #492 (comment)

Can the credential manager remember auto-detection results?
With the current implementation, we pay this auto-detection tax every time we git fetch even though the Windows' credentials manager has proper authentication information available.

In terms of implementation, maybe the credential manager could do the equivalent of

$ git config credential.example.com.provider <result of auto-detection>

Thanks

[mjcheetham]

Thanks for this issue! We've implemented this functionality pretty much as described, and it will be included in the next release of GCM! Thanks again 😁

[gpakosz]

Hey @mjcheetham 👋

Sorry for the late message. I forgot to thank you for implementing this 🙏