Add pyproject.toml to the project

[arjxn-py]

Description

This PR adds pyproject.toml to keep project up to date & also potentially handle PyBaMM packaging to further have pybamm[all] installation.

Note : This is subjected based on the complexity of this issue, I haven't done this before but will try my best to complete this PR with your help definitely.
Fixes #3049

Type of change

Please add a line in the relevant section of CHANGELOG.md to document the change (include PR #) - note reverse order of PR #s. If necessary, also add to the list of breaking changes.

• New feature (non-breaking change which adds functionality)
• Optimization (back-end change that speeds up the code)
• Bug fix (non-breaking change which fixes an issue)

Key checklist:

• No style issues: $ pre-commit run (see CONTRIBUTING.md for how to set this up to run automatically when committing locally, in just two lines of code)
• All tests pass: $ python run-tests.py --all
• The documentation builds: $ python run-tests.py --doctest

You can run unit and doctests together at once, using $ python run-tests.py --quick.

Further checks:

• Code is commented, particularly in hard-to-understand areas
• Tests added that prove fix is effective or that feature works

[arjxn-py]

Also directly related to #3035

[arjxn-py]

CMakeBuild error solved by using legacy here

[arjxn-py]

Getting these logs which i was also getting while using tox4 hence trying using nox here as #3005 is not merged yet.