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/scheduler.py

@@ -21,7 +21,7 @@ from apscheduler.triggers.cron import CronTrigger
 from apscheduler.triggers.interval import IntervalTrigger
 from apscheduler.triggers.date import DateTrigger
 
-from .ipynb_tools import Gisaf
+from gisaf.ipynb_tools import Gisaf
 
 formatter = logging.Formatter(
     "%(asctime)s:%(levelname)s:%(name)s:%(message)s",