Remove relative imports

Fix primary keys (optional)
Add baskets, importers, plugins, reactor
Add fake replacement fro graphql defs (to_migrate)
Add typing marker (py.typed)

src/gisaf/database.py

@@ -7,7 +7,7 @@ from sqlmodel.ext.asyncio.session import AsyncSession
 from fastapi import Depends
 import pandas as pd
 
-from .config import conf
+from gisaf.config import conf
 
 engine = create_async_engine(
     conf.db.get_sqla_url(),