Create Base code for unsupervised unet

[TerenceTYAranowitz]

Description

Import base code of unsupervised unet model and adapt for our project repository.

Files

src/models/unsupervised/unet/*

Tasks

• [ ] create new directory src/models/unsupervised/unet/*
• [ ] port unet basecode
• [ ] adapt to make it compatible with our repo, file locations, shape, etc