.app bundles in archives mounted with mountarchive do not work yet, the user has to copy out the application first.

We should make it work.

Example: https://github.com/helloSystem/Utilities/archive/master.zip

Why?

Execute permission is there, application can be executed from the terminal.

-r-xr-xr-x  0 root  wheel    12K 16 Feb. 18:49 /var/run/user/1001/_home_user_Desktop_Utilities-master.zip/Utilities-master/3D Printing/FreeCAD.app/FreeCAD