what exists now:
	cmake/
	fw/					// code for firmware
	fwlib/			// code in firmware, but can be tested on x86
	shared/			// shared code between firmware/host
	testjig/		// testjig code (_all of it_: fw, host, etc...)
	util/				// host executables

what I wanted next:
	cmake/
	fw/
	fw_shared/
	fwlib/
	shared/
	tj_fw/
	tj_shared/
	tj_util/
	util/


alternative (list of libs and exes)(note: I replaced `shared` lib with `util` lib and previous `util` is now `host`):
	boards/								// per-board specific code
	control/							// control loops
	conversion/						// conversion code (but this is quite small /o\)
	drivers/							// drivers as peripheral drivers
	fw/										// contains firmware executable and all fw-related stuff not elsewhere
	host/									// executables for host
	metrics/							// analysis metrics (but this is quite small /o\)
	protocol/							// definition of the main protocol between servo/host
	testing/							// code relevant to the automatized testing
	testjig_drivers/			// drivers for testjig
	testjig_fw/						// testjig firmware
	testjig_host/					// host code for testjig
	testjig_protocol/			// def of tstjig protocol
	util/									// generic small utilities that can be used by antything (util/logging)