Add the missing "Select fonts" functionality in "ExportAllFonts.csx" script.

[VladiStep]

Description

When there was the "ExportFontData.csx" script, there was a window that allowed you to select only few fonts for exporting.
This PR reimplements the selection window, but it's WPF instead of WinForms.

Notes

@C-arth asked me to make this, so thanks to him.

[github-actions]

Download the artifacts for this pull request here:

GUI:

• GUI-windows-latest-isBundled-false-isSingleFile-false
• GUI-windows-latest-isBundled-false-isSingleFile-true

CLI:

• CLI-macOS-latest-isBundled-false
• CLI-ubuntu-latest-isBundled-false
• CLI-windows-latest-isBundled-false

[CST1229]

wouldn't this make the script not cross-platform again? (which is the whole reason that functionality was removed from it)

[VladiStep]

Oh, hm, fair point.
But for now, it can stay like that? It's not difficult to revert the changes when UTMT will become cross-platform

[VladiStep]

Also, WPF can be ported to Avalonia much easier than WinForms?
And it's also compatible with the dark mode now.

[CST1229]

Also, WPF can be ported to Avalonia much easier than WinForms? And it's also compatible with the dark mode now.

what about the CLI?

(i think one way here would be to make this a separate GUI-only script, maybe like ExportSpecificFonts.csx, and keep the current ExportAllFonts that works everywhere. there already are a few scripts that rely on GUI and don't work on the CLI, so this isn't exactly a new thing)

[colinator27]

Yeah, I'm not sure I like the idea of having GUI-specific scripts like this anymore, unless the GUI part of it is part of the scripting interface.