Tidy up the repository to be published to Pypi

[engdoreis]

This PR prepares the two packages hosted in this repository to be published in pypi.

• rdlexporter: A library to generate SystemRDL files from the Hierarchical Register Model.
• rdl2ot: A PeakRDL extension to generate Opentitan style source files from SystemRDL files.

This is how the published package will look like in Pypi:
https://test.pypi.org/project/rdlexporter/
https://test.pypi.org/project/rdl2ot/

[machshev]

This generally looks good! This will be a huge improvement, thanks.

Some nits, but up to you what you take from them.

[machshev]

There is no ruff tool config here. Which is fine if the defaults are okay, but it might be worth explicitly specifying in case the defaults change?

[machshev]

Same comment here about the ruff config.

[machshev]

Just noticed you have the ruff config here. If the LSPs pick this up okay then great! Might be worth checking they don't stop at the package level pyproject.toml when discovering the ruff config.

A quick test could be to set the line length to 10 or something and then run ruff inside one of the package directories?

Actually I guess the IDE may pick up the pyproject.toml from the root of the repo first? Not sure, but it might be worth opening neovim from the context of a subdir within a package and then again at the repo root and see if there is a difference in terms of rule discovery.