Build V3 of the plotter

[gruvw]

• [x] Make it smaller
• [x] make it working with the new clamp design
• [x] more support, no bending and not wobble

[gruvw]

@unglazedstamp

[pinar-oray]

This is the latest design we came up with: plotter and y-axis, adapted. This is the assembly file with a bit of clamp as well.