scripting: expose icon in config

[naveenrajm7]

• Allows to get/set built-in icons
  iconURL is URL in UTMConfig, but stored as string in config.plist, same is done for scripting interface.

Usage:

tell application "UTM"
  set vm to virtual machine named "OpenBSD"
  set config to configuration of vm
  set icon of config to "openbsd"
  update configuration of vm with config
end tell

Say hi to puffy!

For reference :
All available icons are in https://github.com/utmapp/UTM/tree/main/Icons
corresponding icon keys in

UTM/Platform/Shared/VMConfigInfoView.swift

Line 321 in 8ef19ff

private let ICON_TITLE_MAP: [String: LocalizedStringKey] = [

[naveenrajm7]

fixes #6914

For future :
If you want to allow custom icons through scripting,

• Take icon as URL from scripting,
• Expose isIconCustom field in config
• Take care of sandbox permissions of the given icon file
• Copy icon file to VM bundle, set URL in config accordingly
  ...

not worth it