Implement Windows block detection and automatic fix

[KamilDev]

Features

• Automatically fixes the very common issue of Windows blocking the portable version zip from working.
• If the automatic fix fails, gives the user clear instructions on how to fix the issue, instead of silently exiting.
• Handle plugins that fail to load, allowing QuickLook to continue running without them.

How to test

1. Build this PR version to get portable version.
2. Upload the .zip to my simple web app File Download Simulator (source) to simulate downloading from online (just creates local blob URL and triggers the download).
3. Right click on downloaded zip file -> Properties. You should see it now contains "Unblock" option. Don't do anything.
4. Extract the zip using default Windows zip tool (using a tool like 7-zip may fix the block automatically).
5. When running QuickLook.exe, you should get the following message box:

The application should restart and work as normal.
If it fails to automatically unblock, it will show the following message:

After following the instructions, and launching QuickLook.exe from the unblocked folder, it should work as normal.

[emako]

This works for #1

[emako]

Note: Transferring

Use UnblockZoneIdentifier as an alternative to PowerShell in subsequent steps.