Add support for github enterprise instance (GHEC) or potentially other types of github instances

[simchri]

Hello!

thought it might be valuable to share a modification that I have been using personally now for a few days.

The issue: My company gives us access to copilot, but only through their private GitHub Enterprise (.Com) instance. I love the plugin but could only continue to use it by changing the hardcoded urls to point to our instance. However, this could also be made configurable. So proposition:

• introduce config keys for setting basically the github url
• adjust the built-in copilot provider to use configurable urls

PR : #1343 (comment)
feedback very welcome, I am completely new to lua :)

Regards!

[wojtuss]

@deathbeam , any plans for adding this support?
Thank you!

[deathbeam]

Yes its last planned thing for 5.0.0, just did not got around to adding it yet

[AlejandroSanchez90]

hey, any update on this? my job just move to a GHE account, and copilotChat, keep asking for authentication for regular github (even thru copilot.nvim is working fine with GHE )

[arjun289]

yeah same here

[acoskun1]

Hi folks, seems like this issue has been open for a while. Are there any updates on this? It would help those using enterprise URLs drastically.