Syntax highlighting in TTY output

[EmNudge]

While I understand the immediate goal is for feature compat, the project has solid grounds to greatly improve on the terminal experience with sqlite.

Ideas

• highlighting special characters, such as "INFORMATION SEPARATOR ONE" (U+1F) in outputs to differentiate it from whitespace.
• highlighting the limbo> prompt differently from the user entry and output.
• dimming the table borders in .mode pretty
• highlighting the SQL output from .dump to make scanning for bugs easier
• (maybe) highlighting known value types such as dates (would be difficult)

[pedrocarlo]

Hey @EmNudge, I like the idea and Im I have a PR open looking to start improving the terminal experience. Right now, I did some preliminary work with autocomplete, and next I want to focus on syntax highlighting. Will link here when I have an update.