Consider use `pathlib` over `os.path`

[Jerakin]

pathlib is the modern way to handle paths and in my opinion makes for more readable code.

Needs some looking into if the 3rd party libraries that are in use support pathlike objects or only string. If they only support string it might not be worth changing it.

[Linbreux]

@Jerakin Thanks for the suggestion. I'll look into it when I have some free time!