Learning-loop-node

This release largely improves the stability of the communication with the learning loop backend. BaseModels were changed to dataclasses to speed up the generation of objects. The codebase is now mostly type-annotated and uses common formating schemes.

Increased Timeout for httpx requests leading to less errors in the communication with the learning loop

Fix typing problem that prevents to use library with python 3.8

Updated how nodes authorize

* add prefix again

* Updated how nodes authorize