Development of cta-sdk library

The goal is to develop a CTA SDK python package which allows python developer to interact with CTA easily.

Currently we need to build cta-admin command each time we want to create, delete, get ... a resource in CTA and run this command with subprocess module.

With this ticket you want a clean python API, with full static typing support, which allow IDE, static type analyser like mypy to run for having a first check.
Thanks to this will we have a more reliable code and easier to write for developers.