MySQL backend

[rspeele]

Per #1 it would be nice to be able to target MySQL as a backend.

A PR for this would be welcome. #1 outlines how it would be done.
Alternatively if you want MySQL support but don't want to add it yourself just thumbs-up this issue to indicate your interest.

[leocavalcante]

Oh, I've everything already setup on my project to discover later it doesn't support MySQL 😢 Back to SQLProvider.

[katatunix]

Please,

Support MySQL, and netcore also.