[+] Hide sides on gitadora 𝛿 (#705)

## Description of change
Added an option to only disable the left/right screens of gitadora gw
delta while exposing the touch panel screen.

## Testing
Tested by hand on CachyOS + hyprland + gamescope + wine + vnc + phone +
cat 🐈‍⬛

<img width="2560" height="1707" alt="image"
src="https://github.com/user-attachments/assets/a2ef0172-68e2-43c2-89c3-4863698f2f00"
/>

src/spice2x/launcher/options.h

@@ -110,6 +110,7 @@ namespace launcher {
             GitaDoraTwoChannelAudio,
             GitaDoraCabinetType,
             GitaDoraArenaSingleWindow,
+            GitaDoraArenaWindowLayout,
             GitaDoraLefty,
             GitaDoraWailHold,
             GitaDoraPickAlgo,