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/models/to_migrate.py

@@ -0,0 +1,18 @@
+from pydantic import BaseModel
+
+class ActionResult(BaseModel):
+    message: str
+
+class ActionResults(BaseModel):
+    name: str
+    message: str
+    actionResults: list[ActionResult]
+
+class FormField(BaseModel):
+    name: str
+    type: str
+
+class ModelAction(BaseModel):
+    name: str
+    icon: str
+    formFields: list[FormField]