[JPackage] Launcher should support command line arguments

[Tobias Diez]

Hello everybody,

currently, the default launcher generated by jpackage does not accept
command line arguments. On the other hand, the console launcher
(--win-console) allows to specify command line arguments but then a command
line window is kept open (which is fine for command line applications but
not for gui applications). Thus, what is missing is a launcher that admits
command line arguments without keeping the cmd window open.

It would be nice if this feature could be added. I guess it is quite common
that gui applications also admit cmd arguments.

Best regards
Tobias