Fix Dark Mode Mode System Look and Feels

[bbb651]

Tested with gtk dark look and feel on linux using the following system properties (java arguments):

-Dawt.useSystemAAFontSettings=on
-Dswing.aatext=true
-Dswing.defaultlaf=com.sun.java.swing.plaf.gtk.GTKLookAndFeel
-Dswing.systemlaf=com.sun.java.swing.plaf.gtk.GTKLookAndFeel

[bbb651]

As a side note it might be nice to have an option to enable a dark look and feel by default such as Darcula as a light mode look and feel is the default pretty much everywhere (except technically GTK but it does not work out of the box anywhere afaik) and they basically all don't feel native anyway

[bbb651]

Turns out getting the gtk look and feel to run inside of the steam runtime container thing is absolute hell, I'm thinking of just adding FlatLaf as a maven dependency and just using it's dark mode for all platforms instead of the system look and feel, what do you think @kiooeht?