* refactor write-property tag check
* modify ports objects to use write-property tag check API
* modify example objects to use write-property tag check API
* Fix object unit test builds
* Fix and run unit ztests via CMake
* Enable unit testing on Travis CI
Co-authored-by: Steve Karg <skarg@users.sourceforge.net>
* Leverage (older) embedded unit tests into external unit tests build upon copy of Zephyr's ztest library and CMake.
* Expand top-level CMake build to run external unit tests.
* Expand Zephyr module extension to run external unit tests via west or sanitycheck.
Co-authored-by: Gregory Shue <gregory.shue@legrand.us>
Steve Karg