Support other testing suites than ScalaTest

[Luka-J9]

Currently gutter support only extends to ScalaTest - it would be nice to be able to make an easy to onboard way of managing a couple of the other popular testing frameworks

Off the top of my head:
Munit
Specs2

Additionally property test extensions for both

To also consider - libraries like zio/cats also include their own test harnesses, some of which extend the above.

Given the number of frameworks and extensions this might be a large ask - however maybe we can script it out for easier management?

Open to suggestions and thoughts