improvements roadmap - various issues that need to be addressed

• expand tests to cover various yarr connectivity configuration choices
  • the assumption is that the connectivity is always "path": "relToCon" but this is not true
• unit tests should not check only the CLI functionality, but also core python functionality not through the CLI, with the CLI exposing the python core functionality
• use Pathlib everywhere, not just sparingly, such as in https://gitlab.cern.ch/YARR/yarrtist/-/blob/master/src/yarrtist/cli/plot_connectivity.py?ref_type=heads#L38-40
• do not assume that users of yarrtist are ATLAS ITk users (e.g. not everyone will have serial numbers)
  • additionally the concept of "modules" (whether quad or triplet) is not a good assumption per-se. a module should correspond likely with something in a connectivity file, but a single connectivity file does not typically represent a module
  • do not rely on connectivity files for any sort of ordering or plotting, provide a way to specify the type of grid to make + the order, e.g. [[1,3],[4,2]] (this sort of config is supported in matplotlib)
  • do not assume the name "front-end chip" or similar, just call it a chip like YARR does
• make sure none of the python functions internally use load_data and only rely on non-file-based data. There should be zero-instances of plotting that relies on an input file internally. The plotting functionality should rely only on data passed in through the functions themselves adhering to some structure.
• don't rely/depend on PIL (pillow)
• create documentation website (mkdocs, gitlab pages with CERN: https://how-to.docs.cern.ch/)
  • document all command-line interfaces
  • document all functions
• don't use bare exceptions (e.g. https://gitlab.cern.ch/YARR/yarrtist/-/blob/master/src/yarrtist/plotter/core_functions.py?ref_type=heads#L211)
• resolve all pyproject.toml ignores: https://gitlab.cern.ch/YARR/yarrtist/-/blob/master/pyproject.toml?ref_type=heads#L134-141 and replace with

  ignore = [
    "PLR",    # Design related pylint codes
    "PT004",  # Incorrect check, usefixtures is the correct way to do this
    "RUF012", # Would require a lot of ClassVar's
  ]

• resolve all pylint ignores: https://gitlab.cern.ch/YARR/yarrtist/-/blob/master/pyproject.toml?ref_type=heads#L164-175
• add scientific-python repo-reviewer: https://gitlab.cern.ch/atlas-itk/pixel/module/module-qc-tools/-/blob/main/.gitlab-ci.yml?ref_type=heads#L37-42