crete database

[kaplanelad]

Add the option to create a database from the CLI. #112

This PR is still in progress.

In db cli command we call create_context which creates DB connection from the yaml config. At this point when the user wants to create a DB the database does not exists and the create_context returns an error.

My investigation:
postgres
We can replace the DB name to Postgres and open the connection, which creates automatically and then we can create the Database
postgres://loco:loco@localhost:5432/postgress

MySql
We can remove the db name from the connection string and create the DB
mysql://loco:loco@localhost:3306/