* Add missing GTest linking
* Add unit testing switch
* Rename UNIT_TESTING to be fff-specific
* Add fff.h generation toggle
* Use options instead of variables for disabling build elements
* Add interface library for when the header is not regenerated
* Update build script and README
Replace makefiles with CMakeLists.txt. This will allow for IDE and
platform agnostic builds of FFF.
Update the CI for FFF to use github workflows which don't depend on MS VC.
The workflow added will verify the pull requests sent to master buy
running 'buildandtest' which mirrors the developer workflow.
Signed-off-by: Yuval Peress <peress@google.com>
