Jooqx extension for each database driver

[zero88]

Provide an extension interface to make shortcut functions for the specific database driver

1. PostgreSQL

   • enable Row-level security (RLS)

     SET app.tenant TO 'vertx';
     SELECT * FROM ...

2. MySQL

   • Support execute utilities statements https://vertx.io/docs/vertx-mysql-client/java/#_mysql_utility_command

3. TBD