Added hardware mockup and sample code

code/preliminary/hardware_mockup_test/main.cpp

code/preliminary/pic_code_alain/ignition.c

code/preliminary/pic_code_alain/ignition.h

hardware/mockup/ignition_mockup.brd

hardware/mockup/ignition_mockup.pdf

hardware/mockup/ignition_mockup.sch

hardware/mockup/photos/ignition_pcb.jpg

hardware/mockup/photos/ignition_pcb2.jpg

hardware/mockup/photos/ignition_pcb3.jpg

hardware/mockup/skyward_ignition.lbr