change from sync to async and from flask to quart

server/GameBoard.py

@@ -92,7 +92,7 @@ class GameBoard:
 
     self._set_turn(game_data["turn"])
 
-  def start_game(self, game_data:dict):
+  async def start_game(self, game_data:dict):
     self.init_snakes = len(game_data['board']['snakes'])
 
   def end_game(self, game_data:dict):
@@ -134,7 +134,7 @@ class GameBoard:
 
     return {"name": self.type, "is_ladder": self.is_ladder}
 
-  def save(self, store_class, **kwargs):
+  async def save(self, store_class, **kwargs):
     store = store_class(**kwargs)
-    store.save(self)
+    await store.save(self)
     del store