Pre-defining locations and selecting from them when adding new parts

[Reutertu3]

Hi. First and foremost, I'd like to thank you for this great project.

I'm not sure if I just couldn't find it, but I think it would be handy to pre-define storage locations, that are then available in some form of dropdown or selection menu upon adding new parts. That would make it easier for users who aren't familiar with the local storage management to add new parts.