docstr: Warp frames to the specified size (dim x dim).
code: def __init__(self, env, dim):
      """Warp frames to the specified size (dim x dim)."""
      gym.ObservationWrapper.__init__(self, env)
      self.width = dim
      self.height = dim
      self.observation_space = spaces.Box(
          low=0,
          high=255,
          shape=(self.height, self.width, 1),
          dtype=np.uint8,
      )
  
imports: from collections import deque
  import gymnasium
  from gymnasium import spaces
  import numpy
  from typing import Union
  from ray.rllib.utils.annotations import PublicAPI
  from ray.rllib.utils.images import rgb2gray, resize
label_desc: Use image node_id 1 to create a new WarpFrame object from inherited base classes: gym with example: obj = WarpFrame(env, dim)