Allow to initialize a database without schema file

[samuelhamard]

Currently we need schema file to run a migration with septentrion. But when creating a project from scratch, the initial schema is the first migration.

Did we want to force the user to have schema file to initialize the database with Septentrion or do we want to allow initial migrations with only migrations files ?

[ewjoachim]

I think we could allow not having a schema. That would be equivalent to having an empty schema

[SdgJlbl]

So then the current behaviour is a bug? :D

[ewjoachim]

yep.