Download tools from Github enterprise

[ldoin]

#4254 added support for private repositories hosted on github.com but I was not able to get something working with github Enterprise.

I tried using private_hosts config:

{
    "last_update":  "2023-03-27T22:29:52.5918248+02:00",
    "scoop_repo":  "https://github.com/ScoopInstaller/Scoop",
    "scoop_branch":  "master",
    "private_hosts": [
        {
            "match":  "https://github.saobby.my.eu.orgpany.com/*",
            "headers": "Authorization=token ghp_XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"
        }
    ]
}

Accept header need to be set to application/octet-stream So it did nother attempt with

{
    "last_update":  "2023-03-27T22:29:52.5918248+02:00",
    "scoop_repo":  "https://github.com/ScoopInstaller/Scoop",
    "scoop_branch":  "master",
    "private_hosts": [
        {
            "match":  "https://github.saobby.my.eu.orgpany.com/*",
            "headers": "Authorization=token ghp_XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\nAccept=application/octet-stream"
        }
    ]
}

I got an error message saying The 'Accept' header must be modified using the appropriate property or method.

Looking at #4254 I've noticed that Accept header was handled in a particular way. Also there is some logic to retrieve asset url from release url that is only applied if url matches github.com.