Add the ease of magnetic faceplate removal and replacement to the H2S

Magnetic faceplate for the H2S toolhead / extruder for quick and easy removal and replacements during nozzle changes.

A moment to give props to a creator - Downloading some AMS rings for cardboard spools and had an realization. @AU3D has all his listings updated with the links to all of his other spool ring models, no need for a new search because if he has one for the brand you need next just scroll down and find it alphabetically. If you've not posted a model you might not realize how monumental that task is. If this dude makes a ring for a new brand, he's then updating (as of now) 78 other models so that they *all* have that link for the new brand's ring accessible in the description. That's epic. Just thinking about doing that many updates makes my carpal tunnel ache, lol. I linked to one of his AMS rings so you can see for yourself.