Add 3 roles, settings for marathons

backend/app/models/__init__.py

@@ -1,17 +1,21 @@
-from app.models.user import User
-from app.models.marathon import Marathon, MarathonStatus
-from app.models.participant import Participant
-from app.models.game import Game
+from app.models.user import User, UserRole
+from app.models.marathon import Marathon, MarathonStatus, GameProposalMode
+from app.models.participant import Participant, ParticipantRole
+from app.models.game import Game, GameStatus
 from app.models.challenge import Challenge, ChallengeType, Difficulty, ProofType
 from app.models.assignment import Assignment, AssignmentStatus
 from app.models.activity import Activity, ActivityType
 
 __all__ = [
     "User",
+    "UserRole",
     "Marathon",
     "MarathonStatus",
+    "GameProposalMode",
     "Participant",
+    "ParticipantRole",
     "Game",
+    "GameStatus",
     "Challenge",
     "ChallengeType",
     "Difficulty",