Create new google drive folder without upload or upload_resumable

[RedbeanGit]

What's the problem

Currently, to send FileCreateCall request, you have to call upload() or upload_resumable(). However, you don't always want to send file content, especially when you want to create a new folder.

Proposal

Maybe it could be good to implement a doit_without_upload() function for FileCreateCall and make it public.

[Byron]

Indeed, some APIs have never been used by me and the generator might produce less convenient APIs for some because of that.

That said, quality of life improvements for drive3 would be welcome! Those could be implemented with custom settings just for specific APIs that need additional methods to function more conveniently as well - it appears that one special case is already present, and more could be added and possibly implemented for it. Maybe what's there already supports what you are looking for.