Add support for NO_COLOR environment variable

[krisztianb]

Closes #1619

[Gerrit0]

I'd like to avoid introducing new properties, instead just adding the process.env check to the logger file when creating prefixes. Introducing a new property increases the API surface with no immediate benefit that I see

[krisztianb]

Updated. Are you ok with making the property private? I think it makes sense not to query the environment variables each time a message is logged.

[Gerrit0]

Yeah, I'm good with this.

I was thinking of doing:

const messagePrefixes = "NO_COLOR" in process.env ? { ... } : { ... }