Trying older version of gradio + refactored req list

Updated typing extensions version + pre-req from src

Added pre-req file relevant for HF spaces [no ci]

Force requirements to run

bump gdown

updated gdown all places

started setting up install option for pip, but will likely remove as it may not be possible to generalize that easily...

removed another silly dependency

removed dataclasses from requirements

Added option to segment the portal and hepatic veins (one class). Liver segmentation is now run in a separate Process, as TF is unable to clear the GPU manually - only when a session is killed, which is only when a Process is finished/killed.

removed dataclasses

added GPU support and bumped tensorflow to v2.4

Bump pillow from 7.0.0 to 8.3.2

initial commit