build: Fix application of /bigobj compile flag
build: Fix application of /bigobj compile flag

Fixes #2316
Affects only Windows builds.
Need to compile code that generates large object files
with the /bigobj option in order to avoid exceeding the
default number of sections in an object file.
This change applies the /bigobj compiler option to all
configurations, rather than just Debug.
It also applies it only to selected files, instead of
all the files in the project.
Although /bigobj is now applied to Release builds,
this does not increase build time.

KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools,KhronosGroup/Vulkan-Tools