Added base setup for database_schema

Signed-off-by: Bert Hajee <hajee@moretIA.com>
Refactored to easier syntax based on newer version of easy_type

Signed-off-by: Bert Hajee <hajee@moretIA.com>
Added support for using oracle_exec for different oracle users

Signed-off-by: Bert Hajee <hajee@moretIA.com>
Further base implementation for database_schema

Signed-off-by: Bert Hajee <hajee@moretIA.com>