Rename the db test classes.
Delete the deprecated Csv class.
Fix typo in CallbackRoute.
Add array_quick() and array_uquick().
Put the DbDefTest on hold.
Reformat the composer.json and add faker to the dev requirements.
Move the DbDef to the Garden\Db namespace.
Db driver WIP.

- Add SqliteDb driver.
- Make the DbDef work against the new Db class.
- Add unit tests.