pcb: add cutout lines for smd spacers

pcb: shrink jumper hole size, make it more square

pcb: flip right side labels: face more toward user

pcb: add eco1.user lines for export to svg cutouts

fix bottom piece usb area cutouts to match the top

ground pad, led resistor, PTH screw mount holes

preparing for production - flip right side boards upside down - move right side towards the lest - move bottom towards the top - add mouse bites and rails - new detachable tabs implementation - move logos - adjust screw mount holes

pcb: add RESET/POWER label

pcb: add Elite-C/Alvaro 3d model

move push button references to S**, text to side