Add Sejoli tryout JSON snapshot importer

app/models/__init__.py

@@ -8,6 +8,8 @@ from app.database import Base
 from app.models.item import Item
 from app.models.session import Session
 from app.models.tryout import Tryout
+from app.models.tryout_import_snapshot import TryoutImportSnapshot
+from app.models.tryout_snapshot_question import TryoutSnapshotQuestion
 from app.models.tryout_stats import TryoutStats
 from app.models.user import User
 from app.models.user_answer import UserAnswer
@@ -18,6 +20,8 @@ __all__ = [
     "User",
     "Website",
     "Tryout",
+    "TryoutImportSnapshot",
+    "TryoutSnapshotQuestion",
     "Item",
     "Session",
     "UserAnswer",