include what you use in betterRenderer

Its sources reached the standard library through the project headers they
included; those are imports now. 178 headers across 56 files, plus 18 C
library headers elsewhere for memcpy/printf and friends. MSVC's STL does
not supply these transitively the way libstdc++ does.

betterRenderer/renderer/source/fullscreenpass.cpp

@@ -3,6 +3,7 @@
 #include "fullscreenpass.h"
 
 #include "nvrendererbackend.h"
+#include <cstring>
 
 FullScreenPass::FullScreenPass(NvRendererBackend* backend)
     : m_backend(backend) {}