[Board] Create Migrations to create the "Scaffold" of the initial board

[Xazin]

We want to have the same scaffold of the board on both development and production, to not have to set everything up manually, we're going to write one or multiple migration that will insert the proper documents with the correct inheritance.

Migration(s):
... TBD

[Xazin]

We might need to have a "basic" design of how the forum should look to more easily add the required base data for the migrations.