New shortcut to submit 12622p02

[Philippe Hurbain]

Here's the relevant comment from Magnus:

This part is in a grey area. I think for simplicity's sake that we should probably call this a shortcut and move the part but I'd appreciate input from Magnus and others on this thought.

This is exactly the same configuration as Duplo car base, such as https://library.ldraw.org/official/665 or https://library.ldraw.org/official/12391