Add support for command line prefix
- [ x] I searched the issue tracker for other issues covering my case.
Is your feature request related to a problem? Please describe. I would like to be able to launch an instance with a particular command line prefix, for instance "prime-run" on Linux.
Describe the solution you'd like A way to configure an instance with a field where I can write my command line prefix.
Describe alternatives you've considered I tried launching GDlauncher with my arguments on command line but it doesn't work the way I expected.
Additional context
Here's what it looks like in Lutris for example.

Yeah, arguments made on GDL won't affect the Java instance as it gets spawned as separate process and disowned. I also thought about something like that before, but I would integrate it into the current java args as a full launch command with substitutions replaced by the launcher (like the java path and game args).