investigate switching to poetry for build, dependecy and deployment management

[svedel]

Poetry seems like the de-facto new standard (also included in PEP guidelines [PEP517]). Purpose of this user story is to investigate its installation and replicating build and dependency management from setup.py.

Poetry makes use of the new standard of relying on pyproject.toml at project root to determine all build and dependency properties.

A few links:

• [question] How to use poetry on Ubuntu? python-poetry/poetry#1543
• https://hackersandslackers.com/python-poetry-package-manager/
• https://python-poetry.org/