Add, update and clean-up utility functions

examples/exampleCommLayer.m

old_examples/testConnSpeed.m

old_examples/testSyncMotor.m

old_examples/testToolbox.m

source/+DeviceMode/Default.m

source/bitfield2input.m

source/bitfield2port.m

source/bool2str.m

source/input2bitfield.m

source/input2port.m

source/isBool.m

source/isDeviceValid.m

source/isModeValid.m

source/isMotorValid.m

source/isPortEnumValid.m

source/isPortStrValid.m

source/isSensorValid.m

source/isSyncedBitfield.m

source/port2bitfield.m

source/port2input.m