Add (missing) options in Save Image step

I’ve just changed some old API files to use a Library file for image processing (I should use the Library more - it’s an excellent feature).

Ideally, it would be helpful if all options could be sent as parameters, but one that seems particularly necessary is the path to save images. It seems to work if entered manually, so it’s just missing from the UI:

Similarly, when adding parameters in the calling API, it would be helpful to have an option to select the folder, but there is only a dynamic picker:

While it would be good to have both options, as it is, it seems the wrong way round. You’re likely to choose a static folder in the calling API, and a dynamic path in the library file.