Add library functionality

[irm-codebase]

Turn clio into a python library that supports our operations. For general validation, interfacing, etc.
Think of this as the 'next-gen' eurocalliope-lib.

Features

• Python setup using uv for extra fanciness.
• CI for pull requests, with build and test runs for Linux / MacOS / Windows.
• Functions:
  • INTERFACE.yaml parsing, validation and mermaid graph generation.
  • modulegraph generation (turn ugly snakemake rulegraph into modular ones!)

[irm-codebase]

For now this will mostly support our data module docs generation (and avoid a lot of duplicate code across them).

@sjpfenninger no real need to review, but would like to hear your opinion on having this live in clio. We had some discussions and concluded that avoiding more repos was preferable since the specification and the library that supports it share the same version this way.

@brynpickering no SW changes in relation to the trial. I've added some extra functionality to the repo itself though. Only addition is the modulegraph stuff, to generate these:

[sjpfenninger]

@sjpfenninger no real need to review, but would like to hear your opinion on having this live in clio. We had some discussions and concluded that avoiding more repos was preferable since the specification and the library that supports it share the same version this way.

That seems sensible to me!

[brynpickering]

Generally fine, although I don't know that using uv is actually a good thing...

[irm-codebase]

Updated!

@brynpickering about uv.
One of the main reasons behind this switch was that it is really easy to separate requirements with it.

uv add pandas < -- will add pandas as a dependency
uv add mypy --dev <-- development dependency, never built
uv add geopandas --group geo <-- optional dependency, installed through clio_tools[geo].

It's honestly saving a lot of headaches, and it's not something that users will ever see or need to use.

[irm-codebase]

@brynpickering thank you for the help!

I believe the package is ready. What is left to enable us to upload to conda-forge?