[RFC] Add tabs to magnet cutouts

[CuddlyTurtle]

for people that use pressfit instead of glue.

This is a proof of concept that needs refinement by someone that uses pressfit. Areas of future consideration:

• Removing 1/4 of the surface area when you press-fit seems counter-productive. Less should be more.

• Some press-fit models make the tab even deeper than the magnet hole so you can get a tool under the magnet when prying it out.

• At least for asthetic reasons it would probably be nicer to tave all tabs poing towards the middle.

[CuddlyTurtle]

This was made to answer the question "how hard would it be to do" from people in the Gridfinity Discord. This is only an RFC before I forget that the code was written. As I don't use press-fits and this scratches none of my itches it probably won't be developed any further.

So just a FYI for now that there are people out there that want something similar, but this RFC can be closed if there is no further interest.

[CuddlyTurtle]

UI change and effect on model:

[gbrunow]

I would love to see this merged!

This fork has a full solution that could be brought over: https://github.com/software-2/FusionGridfinityGeneratorPressureFit

[gbrunow]

I took the liberty to further refine this and submitted a new PR (#87)

[CuddlyTurtle]

Replaced by #87