Migrate project configuration to `pyproject.toml` and remove `setup.py`

[14Richa]

Description

This PR involves moving the project configuration from setup.py to pyproject.toml and update the bumpversion.cfg file.

Fixes #24

Checklist:

• [X] My code follows OCF's coding style guidelines
• [X] I have performed a self-review of my own code
• [X] I have checked my code and corrected any misspellings

[peterdudfield]

The tests are failing, looks like somthing to do with the new pyproject.toml, you might have to run it locally to see what is wrong