feat(cli): Update Comet Extension Script with V2 (uBO) support

[An0n-00]

Well hello there.

I've noticed that a recent update updated Comet and disabled Manifest V2 Support for extensions.

That is pretty bad since that stops the usage of Extensions like uBlock Origin. I did some digging and found a way to enable it back on.

Now I wanted to share this with the open source community that other people can also use V2 extensions in comet too. Hence the refactor. Could you also update the script on https://cdn.cplx.app/comet/win.ps1 ? thanks!

Screenshots

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Copilot Generated Summary:

This pull request significantly enhances the comet-win.ps1 PowerShell script for managing the Comet browser extension on Windows. The primary improvements include support for toggling Manifest V2 extension support via shortcut flags, clearer status reporting, and more robust shortcut management. The script now checks both policy and shortcut flag status, enables or disables both as needed, and provides user-friendly feedback.

Manifest V2/Extension Support Management:

• Added logic to find Comet shortcuts in the Start Menu and check if the ManifestV2 support flag (--disable-features=ExtensionManifestV2Unsupported,ExtensionManifestV2Disabled) is present in their arguments. [1] [2]
• Added functions to install or uninstall the ManifestV2 flag on all detected Comet shortcuts, allowing users to enable or disable ManifestV2 support easily.

Policy Path and Extension Settings:

• Changed the registry policy path from HKLM:\SOFTWARE\Policies\Chromium to HKLM:\SOFTWARE\Policies\Perplexity\Comet for more accurate targeting.
• Improved the logic for installing and uninstalling extension settings in the registry, now separated from shortcut management. [1] [2]

User Interaction and Status Reporting:

• Enhanced the script to display a clear, color-coded status summary for both extension policy and shortcut flag, and prompt the user to enable or disable both together.
• Improved user feedback throughout, including messages for missing shortcuts and operation results.

[An0n-00]

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