Add TensorFlow support for perceptual filtering

[yruen]

Filter (mm3D) textures based off their visuals with Tensorflow models

• [x] Learn Tensorflow got the jist of it
• [x] Create training script preliminary done
• [ ] Training script pt2: add feature extraction
• [ ] Get textures from the game + off google (Downscale TF downscales automatically)
• [ ] Create TensorFlow model
• [ ] Integrate into main code
• [x] Check device support TF only works on CPU, GPU support is only available on Nvidia GPUs :(

[yruen]

Reference: https://colab.research.google.com/github/tensorflow/docs/blob/master/site/en/tutorials/images/classification.ipynb#scrollTo=dC40sRITBSsQ

[yruen]

Tensorflow accelerators don't work on newer versions of python :(

TensorFlow-DirectML - up to Python 3.7

[yruen]

Preliminary testing using just copying the basic example provided does not work very well.

Ideas to improve

• Add feature extraction somehow (bricks have a pattern, stones have a pattern, wood has horizontal lines)
• Increase dataset size significantly