Implementing the training script for the cat-detection model

"Praline: I've never seen so many aerials in me life. The man told me, their equipment could pinpoint a purr at 400 yards and Eric, being such a happy cat, was a piece of cake."
– Fish License sketch, Monty Python's Flying Circus, Episode 23 (1970)

This segment of the project uses tens of thousands of files, including images, annotation files, scripts, and intermediate and final outputs of the training process. Let's organize all of this new material by giving our project a subfolder, cascade_training, which will ultimately have the following contents:

• cascade_training/CAT_DATASET_01: This is the first half of the Microsoft Cat Dataset 2008.
• cascade_training/CAT_DATASET_02: This is the second half of the Microsoft Cat Dataset 2008.
• cascade_training/faces: This...