build: adjust to bnd/bndtools 3.0.0 setting

Signed-off-by: Ferry Huberts <ferry.huberts@pelagic.nl>
build: update the 'customised settings' comment in build.bnd

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

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