add methode to create more snake and use them when more games are running

main.py

@@ -12,7 +12,6 @@
 # To get you started we've included code to prevent your Battlesnake from moving backwards.
 # For more info see docs.battlesnake.com
 
-from server.SnakeBuilder import SnakeBuilder
 from server.Server import Server
 
 from dotenv import load_dotenv, find_dotenv
@@ -24,7 +23,7 @@ if __name__ == "__main__":
 
     server = Server(
         data_path=os.path.dirname(__file__),
-        snake=SnakeBuilder.build(os.environ.get("SNAKE", "DummSnake")),
+        snake_type=os.environ.get("SNAKE", "DummSnake"),
     )
 
     if os.environ.get("STORE_GAME_HISTORY", None):