[models] Add binary classification model with pretrained weights

[frgfm]

🚀 Feature

Create a models module in the package that allows users to pick a binary classification model with pretrained weights.

Motivation

While users are able to train on the dataset, for ease of use, a stable pretrained model should be accessible for people who only wish to perform inference.

Pitch

The module will implement model similarly to https://github.com/pytorch/vision/tree/master/torchvision/models where a pretrained argument can be set to True to load in the pretrained parameters.