Summary of the new feature / enhancement

Dotnet 9 got support for creating UUID v7 GUIDs.

• Dotnet method [guid]::CreateVersion7(): https://learn.microsoft.com/en-us/dotnet/api/system.guid.createversion7

This could be useful in PowerShell too.

• Relevant cmdlet: https://learn.microsoft.com/en-us/powershell/module/microsoft.powershell.utility/new-guid

Proposed technical implementation details (optional)

• Default to v4 like now, but add optional switch for UUID v7, and optional DateTimeOffset as input.
• New cmdlet New-Ulid?