Update Makefile
Update Makefile

"make" or "make debug" save firmware to out/debug
"make release" save firmware to out/release

Flash firmware:
"make dfu" or "make dfu-debug"
"make dfu-release"

bigclownlabs/bc-core-module-sdk,bigclownlabs/bc-core-module-sdk,bigclownlabs/bc-core-module-sdk