Summary of the new feature/enhancement

There are cases when a module only works on a specific operating systems. Today module authors can tag a module in PSGallery stating which OS is supported. However, there is no enforcement from PowerShell itself to prevent a user from importing an incompatible module.

This request also goes along with #3751 to add support for #requires -OS.

PowerShell 7 would be the best time to release this functionality.

Proposed technical implementation details (optional)

Add CompatibleOS field in the PSD1 with valid values of Windows, MacOS, and Linux. Then Import-Module can be updated use that field to prevent importing an incompatible module.