Added FAQs for common errors

[WillisMedwell]

I'm new to this library so some documentation around common errors like:

"message(FATAL_ERROR "A module (${name}) failed to define its name!")" from CPM.cmake L1246

would be great... e.g "CPM_AddModule( "glaze" GIT_REPOSITORY "https://github.com/stephenberry/glaze" GIT_TAG "v2.5.2" )" and the actual glm repo both seem to have this error...