move database initializer to new command

[drujensen]

Description of the Change

This addresses issue https://github.com/amberframework/granite-orm/issues/107

This moves the database initializer to new. There were several users that did not use generators and either copied their models over or created them by hand. The initializer was not generated for them so it created confusion.

Alternate Designs

The original thought was that if someone didn't want to use a database, then we shouldn't generate the initializer. However since the new command already assumes an MVC model, it makes sense that this initializer should be created on new instead of when a model is generated.

Benefits

This also eliminates some duplicate code between auth and migrate.

Possible Drawbacks

If the developer doesn't want to use granite or crectco, an extra file is generated that they will need to remove or change.

[eliasjpr]

Can't wait to see the Granite logger in the console. :)