scripting: expose display config

[naveenrajm7]

Fixes #6660

• qemu display
  • All fields , except vga ram is exposed
• apple display
  • only dynamic resolution property is exposed.
  • From GUI , the height, width and pixel of resolution is in pre-defined ratio and hence not exposed.

Both displays will have ids, which can be used to track and detach the displays.

Usage:

add_qemu_display.applescript

on run argv
  set vmName to item 1 of argv
  tell application "UTM"
      set vm to virtual machine named vmName
      set config to configuration of vm
      set currentDisplay to displays of config

      set newDisplay to ¬
          { ¬
              hardware: "virtio-gpu-pci", ¬
              dynamic resolution: false, ¬
              native resolution: true, ¬
              upscaling filter: "QsLi", ¬
              downscaling filter: "QsNe" ¬
          }
      
      set end of currentDisplay to newDisplay
      set displays of config to currentDisplay
      update configuration of vm with config
  end tell
end run

clear_qemu_display.applescript

on run argv
  set vmName to item 1 of argv
  tell application "UTM"
      set vm to virtual machine named vmName
      set config to configuration of vm
      -- clear all displays      
      set displays of config to {}
      update configuration of vm with config
  end tell
end run

add_apple_display.applescript

on run argv
  set vmName to item 1 of argv
  tell application "UTM"
      set vm to virtual machine named vmName
      set config to configuration of vm
      set newDisplay to {dynamic resolution: true}
      -- Apple Configuration supports only one display
      set displays of config to newDisplay
      update configuration of vm with config
  end tell
end run

[naveenrajm7]

This is a missing piece for the automated VM build naveenrajm7/packer-plugin-utm#5