This commit adds Parasoft C++test as a Static Analyser using Zephyr's SCA
framework.
By specifing -DZEPHYR_SCA_VARIANT=cpptest to west build, a cpptestscan.bdf
file will be generated under builddir/sca/cpptest/.
Signed-off-by: Yasushi SHOJI <yashi@spacecubics.com>
