from_source should support Path objects

[krikru]

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

When earthkit.data.from_source is called with a pathlib.Path object as argument, a TypeError exception is raised with the message object of type 'PosixPath' has no len().

Describe the solution you'd like

earthkit.data.from_source should support Path objects as arguments. It can just convert these to strings if needed to.

Describe alternatives you've considered

No response

Additional context

No response

Organisation

No response

[krikru]

Nevermind; I realized that that the first argument is the name of the source type and not the file path, and therefore cannot be a Path object; when I add that argument, the actual file path argument can actually be a Path object.