Task: Enable only UT_CORE Macros

[Ulrond]

Subject

Requirement to enable only UT_CORE macros for Test Comparison, and if any GTEST backend macros are used, then flag a warning during the build process.

Unclear how we can do this, but the goal is to ensure that no GTEST macros are used if your writing native UT_CORE only.

Notes (Optional)

• Maybe need to have a build flag to state UT_CORE macros only or something, which scans the test code during the build process, and validates from a list of know GTEST macros (ideally also scanned from the version of GTEST that's in used by ut-core), that none of the macro's are being used.

[Ulrond]

In reality this task could move to a future cleanup milestone.