[useragent] Add a global "useragent" key

[AntonOks]

Feature Request

Add a global "useragent" key, which, if defined, overwrites what https://github.com/ScoopInstaller/Scoop/blob/f93028001fbe5c78cc41f59e3814d2ac8e595724/lib/core.ps1#L26 returns

Is your feature request related to a problem? Please describe.

Some websites seem to ban"scoop". One of them is "filezilla-project.org". Sometimes manifests work around this ban and refer to other websites, see also the filezilla manifest. Seems like to address this kind of issue, "checkver" introduces the "useragent" key here . So now one can check if a new version is available based on "scoop banning sites", but still cannot "autoupdate" such manifests.

Describe the solution you'd like

I'd like to see an "useragent" root key in the manifests, which, if defined, overwrites all respective user agents everywhere in the scoop tools and manifests.

Describe alternatives you've considered

I thought about extending "autosupport" in the same way as commit 8feb386 extended "checkver", but then again I'm convinced a general "useragend" key would be the better solution.

[AntonOks]

there is already #5043 ... so if a general "useagent" key would not gonna happen any time soon, could someone please pull #5043 asap?

With the already implemented "checkver", see here . and then the still-to-be-pulled "autoupdate" enhancement #5043 , we would be almost there anyhow, right? :|

[HUMORCE]

A complete custom request headers should be implemented, rather than a part of them, although some sites explictly forbid about this.

For personal/private/enterprise buckets: Scoop can supports more scenes For offical buckets: Avoid use custom request headers for sites forbid it

[rashil2000]

Tracking this in #4062