Flag unix support for ModuleFast in PowerShell Gallery with tags

Seems ModuleFast runs fine on Linux.

It's not currently possible to know what platforms ModuleFast supports just by looking in PowerShell Gallery.

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Supporting PowerShell Core is not a guarantee that it runs on Unix (Linux, MacOS).

How to flag that you support a given platform does not seem to be more standardized than adding tags. Ref:

* 2024-12-30
* 2024-02-18

So, add "Unix", "Linux" and "Mac" as tags? Like PSResourceGet does it:

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Inspect the ModuleFast package metadata or manifest and compare its tags with the Microsoft.PowerShell.PSResourceGet manifest referenced in the issue. Add the Unix, Linux, and Mac tags if supported by the package metadata, then verify that the tags appear in the PowerShell Gallery package view or API response.

索引モデルが issue の本文から書いたものです。