Use latest centralized official python standard package distribution pyproject.toml

[mashanz]

According to PEP 621 and my x(twitter) status

• use centralized config python package distribution pyproject.toml
• use poetry as distribution/build tool, package manager and virtual environment (python latest standard all in one tools)
• fix missing dependencies on when installing using package manager (poetry)
• remove soon will be deprecated unused setup file configs (requirement.txt, setup.py, tox.ini etc)

[mashanz]

cc @sekaranglila @stephenthajeb