MechABL compliant probe

Fits the original body or my modified one.

Make sure the spring part is printed with two lines. Reduce outer perimeter width if necessary.

Use a M3x16 or longer and only screw it in as far as the head of the screw does not hit the others.

If you are using my springles body, make sure the screw is able to pivot a little (otherwise you will have reliability issues).

Also run a couple consistency (M48 in marlin or probe_accuracy in klipper) tests before using it, it needs a bit of time to wear in but once it is it is quite accurate and reliable.