text: Title: Batch prediction
  Body: Hi! Is there any plan for batch inference or passing list of images/image path list in the `readtext` function?
  
  I see that `recognize` takes `batch_size` arg but `img_cv_grey` seem to be single image only. How do I infer on a batch of image?
  
  ```python
  def recognize(self, img_cv_grey, horizontal_list=None, free_list=None,\
                    decoder = 'greedy', beamWidth= 5, batch_size = 1,\
                    workers = 0, allowlist = None, blocklist = None, detail = 1,\
                    rotation_info = None,\
                    paragraph = False,\
                    contrast_ths = 0.1,adjust_contrast = 0.5, filter_ths = 0.003,\
                    reformat=True):
  ```