Add some color to the command line output

[nojaf]

Maybe to make some things a bit more clear, we can use some colouring in the command line output. Red text for a file that didn't format for example. https://github.com/vbfox/ColoredPrintf looks interesting to process.

Happy to hear your thoughts.

[josh-degraw]

Idk if this is still super wanted or if it's already been implemented even haha, and it's definitely not nearly as full featured as the lib you mentioned, but I made a tiny lib to do this a few years ago when I was first starting with F# that works pretty well for simple situations like this: https://github.com/josh-degraw/fchalk