PatchGAN with CLI scripts

Major overhaul of patchGAN which now includes the following:

• UNet architecture has latent space output
• Command line scripts for training and inference
• PyPI release

What's Changed

• Merging development version of PatchGAN by @ramanakumars in #1
• new architecture and various fixes by @ramanakumars in #2
• Create publish-to-test-pypi.yml by @ramanakumars in #5
• Create PyPI actions by @ramanakumars in #4
• Updating architecture by @ramanakumars in #3

New Contributors

• @ramanakumars made their first contribution in #1

Full Changelog: https://github.com/ramanakumars/patchGAN/commits/v0.2