CANnectivity USB-to-CAN adapter firmware

This integration test verifies the buildability of CANnectivity against all possible boards that are supported by this application:

$ west twister \
       --jobs 4 \
       --verbose \
       --inline-logs \
       --integration \
       --alt-config-root bridle/zephyr/alt-config/cannectivity \
       --testsuite-root cannectivity \
       --tag bridle