Add id to Game_Player

app/models/game_player.py

@@ -3,6 +3,7 @@ from app.models import Role
 
 class GamePlayer(db.Model):
     __tablename__ = 'game_player'
+    id = db.Column(db.Integer, primary_key=True)
     game_id = db.Column(db.Integer, db.ForeignKey('game.id'), primary_key=True, nullable=False)
     user_id = db.Column(db.Integer, db.ForeignKey('user.id'), primary_key=True, nullable=False)
     role = db.Column(db.Enum(Role), server_default=Role(0).name, nullable=False)