[Feature Request] "qmk compile" non-zero exit code on compilation error

[xudongzheng]

Feature Request Type

• Core functionality
• Add-on hardware support (eg. audio, RGB, OLED screen, etc.)
• Alteration (enhancement/optimization) of existing feature(s)
• New behavior

Description

Having qmk compile exit with non-zero makes it easier to use as part of a larger script.

To demonstrate issue:

# Add some garbage to C file.
date >> keyboards/adafruit/macropad/macropad.c

qmk compile -kb adafruit/macropad -km default
echo $?

[tzarc]

Was fixed as of #22639.