refactor: moving binary to sqllogictest-bin

[skyzh]

It's becoming more and more complex, so it would be good to have a separate crate.

cc @xxchan do you want to work on this? If so feel free to assign yourself. Otherwise I'll do the refactor maybe this month.

[wangrunji0408]

Or consider moving some features into the library? Recently I'm working on deterministic e2e testing, where sqllogictest is used as a library.

[xxchan]

🤔 I'm wondering:

• Whether drivers live in lib or bin crate
• Will we bump versions for them together in the future

Or consider moving some features into the library? Recently I'm working on deterministic e2e testing, where sqllogictest is used as a library.

How will moving binary affect your requirement? 🤔

[xxchan]

I've drafted a PR #67, we can discuss there

[wangrunji0408]

How will moving binary affect your requirement? 🤔

It won't affect. The current refactor looks cool.
My point is to move some codes from sqllogictest-bin/lib.rs to sqllogictest/runner.rs, such as parallel running and printing progress.