Closes #305

Description

This throws an error when a user tries to write a model in a directory with a space in it.

Follow-up to #1514

See my comment here: #1514 (comment)

Thanks for hotfixing this. FYI: This is not an immediate problem anymore: I just talked to @TeunvanWoerkom, he moved to a drive without spaces in the path.

I'm not sure if we should merge this, as the wq test bench doesn't have the coverage of the mf6 module. Most notably, we don't run a model with iMOD-WQ to test if it breaks. The current wq module is tried and tested in many projects, so that is sufficient to do work with. I don't want to risk breaking it with changes.

Besides, Teun manually quoted the paths in his runfile to fix this and then iMOD-WQ apparently also isn't able to deal with spaces in paths (at least the version he used). It crashes upon attempting to create the results directories.

Alternatively: We could raise an error if a user attempts to write a wq model in a folder with a space in the path?

It turned out that adding quotes doesn't do the trick, as iMOD-WQ also cannot handle spaces in paths, even when they are quoted in the runfile. It crashes upon writing results.

Checklist

• Links to correct issue
• Update changelog, if changes affect users
• PR title starts with Issue #nr, e.g. Issue #737
• Unit tests were added
• If feature added: Added/extended example