IAR generates warning Pe111 'statement is unreachable'. In a couple of
cases, replace return statements with TU_ATTR_FALLTHROUGH; because some
compilers apparently can't figure out that the return statements are
unreachable but do whinge about an imagined fall-through without them!
add support of new esp32s3 target and the board
update the roles.mk wrapper to allow dfu flashing of espressif chip
update examples to allow compilation for esp32s3_addax_1 board
once the code is tested the PR to original tinyusb repo will be submitted
