[Grbl_Esp32 Issue#259] Autolevel

Recently I started to check this project, and sounds wow, super great!!

Actually I use my CNC to create PCB boards, the problem is that sometimes the boards level is not correct so I use an autolevel software, named bCNC also in github:
https://github.com/vlachoudis/bCNC

The request is about implementing somethink similar, the actual process is like:
– In the software of bCNC, the user put the Z start position and Z end position of the prove (the end position only for security), the number of points to check for X, Y and the margin but you can put “automargin” that check in the file the minimum and maximum X and Y position to obtain the size of the board
– The software starts to check the level of Z (you need to put the prove to close the circuit with the conductivity of the drill and the pcb)
– (not sure) Create a temporary level file and make a second temporary file with the original file and corrections

I think the first step can be improved to reduce the work to the user, for example you can only ask the distance between prove check (for example 5mm) and automatic automargin. For example if the board lengt is 13mm and it is pre-configured to 5mm the number of point can be ceil(13/5) + 1 = 4, and the points in 0, 3.25, 6.5, 9.75, 13

Thanks for your time to check the idea, I am not sure if I can help but I can try =).