Add validation of the case when package buffer is not aligned to
CBPRINTF_PACKAGE_ALIGNMENT.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>
Extend test to validate cbprintf static packaging on various
platforms.
Added more test configurations: complete, nano, long double.
Signed-off-by: Krzysztof Chruscinski <krzysztof.chruscinski@nordicsemi.no>