feat: swapping out the colors library for chalk

[erunion]

🧰 Changes

This swaps out the colors library for chalk. chalk is a drop-in replacement for colors.

Why?

1. chalk has a lot more dev support than colors.
2. I've always loathed how colors works by modifying String.prototype. Sure you can load colors/safe to do colors.green() but that's not the default flow.
3. oas-normalize and its dependency on @readme/openapi-parser uses it by way of @readme/better-ajv-parser so loading in colors here for yet another way of colorizing CLI messaging is silly.
4. We've been inconsistent in how we load it in the files that do have colors, so often you'll see text.green and it only works because that command is loaded in ./bin/rdme where require('colors') was present. Woof.
5. It's got better detection for managing environments where CLI coloring might not be available.

🧬 QA & Testing

• All tests still pass?

[RyanGWU82]

LGTM! 🎉