Make AppImageLauncher ignore the application

[nottinghamgoclub]

Hello, suggestion please for the Linux builds:

Use X-AppImage-Integrate=false in the .desktop file in the AppImage to prevent AppImageLauncher attempting to integrate the AppImage on each run when loading KataGo with a GUI tool.

Refer to this issue: https://github.com/TheAssassin/AppImageLauncher/issues/338

It is the responsibility of the AppImage creator to add this line, since any integration tool will read an AppImage and try to integrate it by default, if X-AppImage-Integrate=false is not present.