Support Github Enterprise Server

[eberkut]

Description

Add support for Github Enterprise Server.

The API is usually nearly identical to github.com and in the context of this plugin, it's very likely to require no changes other than allowing to specify a base URL.

https://docs.github.com/en/[email protected]/rest?apiVersion=2022-11-28 https://docs.github.com/en/[email protected]/graphql

Authentication also usually works the same as github.com (including Github Apps, PAT, fine-grained PAT or device login).

[Paul-AUB]

Would be nice indeed, now Obsidian is usable freely even in enterprises !