refactor: remove ignores for PTH

[StefanThoene]

Description

Move from os.path to pathlib.Path, to full fill ruff PTH requirements

Issue linked

#475

Checklist

• I have tested my changes locally.
• I have added necessary documentation or updated existing documentation.
• I have followed the coding style guidelines of this project.
• I have added appropriate tests (unit, integration, system).
• I have reviewed my changes before submitting this pull request.
• I have linked the issue or issues that are solved by the PR if any.
• I have assigned this PR to myself.
• I have made sure that the title of my PR follows Conventional commits style (e.g. feat: add optical property)
• I have agreed with the Contributor License Agreement (CLA).

[SMoraisAnsys]

Two remarks:

• Would it be possible to directly us Path(...) / "..." instead of Path().joinpath(...) ? In fact I would avoid using joinpath to ease readability (however there might be a reason to keep it that I'm not aware of).
• Could the core modules be updated to accept str or Path instead of str only ? You could then cast to Path automaticaly to handle both str and Path and, when needed, return to str, e.g. when calling stubs

[StefanThoene]

* Could the core modules be updated to accept `str` or `Path` instead of `str` only ? You could then cast to `Path` automaticaly to handle both `str` and `Path` and, when needed, return to `str`, e.g. when calling stubs

yes it is possible but that would be a second PR/issue it would mean a lot of small changes would be needed

in regards to the first i can do that

[SMoraisAnsys]

* Could the core modules be updated to accept `str` or `Path` instead of `str` only ? You could then cast to `Path` automaticaly to handle both `str` and `Path` and, when needed, return to `str`, e.g. when calling stubs

yes it is possible but that would be a second PR/issue it would mean a lot of small changes would be needed

in regards to the first i can do that

Ok, I'll let you handle that later on then :)

[SMoraisAnsys]

LGTM, thanks handling that task !