[Request]: Add M423 support

[skl111]

What would you like implemented?

It would be great if this plugin would retrieve the x-twist correction information so it can be restored upon a firmware upgrade.

M503 Response

Recv: echo:; X-Twist Correction:
Recv:   M423 A27.00 I96.50
Recv:   M423 X0 Z+0.07
Recv:   M423 X1 Z-0.02
Recv:   M423 X2 Z-0.05
Recv: echo:; Material hea

[cp2004]

That should be simple to add, so it's on the list for the next release.