Parameters for alternative wave form viewer

[oscargus]

We are developing an alternative wave form viewer: https://gitlab.com/surfer-project/surfer and once it is mature enough, it would be nice to add support for it in VUnit. Right now there are the --gtkwave-fmt and --gtkwave-args arguments that determines which format is used and how GTKWave is called. However, I'd like to open a discussion about what the best way to implement a switch for wave form viewer would be?

My spontaneous idea is to rename --gtkwave-fmt to --wave-fmt or --viewer-fmt (still supporting both, but only document the latter) and then have a --viewer-argument (which may default to GTKWave). Possibly also rename --gtkwave-args to --viewer-args and pass whatever is there to the select viewer?

Any ideas or input regarding this?