Foldable spool holder

The P2S's design is truly clean and minimalist, except for the external spool holder, which spoils its cleanliness.
It's true that you can remove it if you're not using it, but if you have a full AMS and want to use a different color or material, being able to place the external spool is very useful. Therefore, having found nothing online, I decided to design this system that allows you to hide the spool holder behind the printer when not in use and quickly reposition it if needed.

The new version "V01" has been released.

New "V01" version with improved central shaft strength (thanks to the community suggestions and feedback).
Now the shaft and the spring system is more robust