rx → support Relation

File in tests/unit/app/driver/can/cbs/rx	Includes file in tests/unit/support
test_can_cbs_rx_aerosol-sensor.c	test_assert_helper.h
test_can_cbs_rx_bms-state-request.c	test_assert_helper.h
test_can_cbs_rx_debug.c	test_assert_helper.h