FileUtils: do not allow directory copy with dst equal to/below src

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
audotagchecker.cli: sync up to Main of flac2mp3

So that they look similar

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
add build project

It depends on every bundle, to speed up building

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>