[FEATURE] add `Path` support to save and load methods

[davidberenstein1957]

Is your feature request related to a problem? Please describe.

Currently, save and load methods only work with str.

Describe the solution you'd like

It would be nice to unify and allow for using the more modern Path

Additional context

[femaleprog]

Hi! I'd love to contribute to this feature.

[davidberenstein1957]

@femaleprog Awesome! Happy to help where needed.

[femaleprog]

thank you !