YJIT: Colorize outlined code differently on --yjit-dump-disasm

[k0kubun]

On --yjit-dump-disasm, I'd like to make it easy to distinguish inline code and outlined code, which I feel makes it more readable. I made outlined code blue because it's a "cold" path, but I'm open to other ways of visualization.

Before

After

[noahgibbs]

I like this change. I don't think this output will ever get piped to a file. If it did, we might want to figure out how to disable it if not printing to terminal.

[k0kubun]

We already used \x1b[1m for comments, so not a new issue 🙂 Actually, I think it's more helpful to leave it in files too since you can see the colors in them with less -R. It's probably not too difficult to remove them from existing files, say, if you use Ruby, but you can't re-add what's removed.

[XrXr]

Looks nice!