fix: detect no_color support

[gkampitakis]

Closes #122

[silverwind]

I recommend using something like https://github.com/jwalton/go-supportscolor. This is for example useful on CI environments like GitHub Actions which can display color while not setting the TERM variable.

[gkampitakis]

Hey @silverwind unfortunately I don't think even your suggestion would do the trick to detect if the go test is running in a terminal that supports color. This pr is me exploring a solution, also #122 (comment)

[silverwind]

Sounds like the stdout you see in tests is not the real one? Yeah it's hard if that's the case.

[silverwind]

Maybe just always output color except when NO_COLOR is in env or TERM=dumb? Most environments these days support color, and stripping of control characters is always possible when needed.