add schemas sync variants formatting initial implementation use existing db, wip move to separate folder fix table definitions wip wiring it up
* skip posting message after detached from engine * review changes * cancel plugin before destroying engine --------- Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com> Co-authored-by: Alex <alex.tran1502@gmail.com>