Fix some includes in source/renderer

Make include-what-you-use happy with some files in source/renderer and
fix what needs to be fixed.

Ref: #8086
Signed-off-by: Ralph Sennhauser <ralph.sennhauser@gmail.com>

source/renderer/VertexArray.cpp

@@ -20,16 +20,16 @@
 #include "lib/alignment.h"
 #include "lib/bits.h"
 #include "lib/sysdep/rtl.h"
-#include "maths/Vector3D.h"
-#include "maths/Vector4D.h"
 #include "ps/CLogger.h"
-#include "graphics/Color.h"
-#include "graphics/SColor.h"
 #include "renderer/Renderer.h"
 #include "renderer/VertexArray.h"
 #include "renderer/VertexBuffer.h"
 #include "renderer/VertexBufferManager.h"
 
+class CVector3D;
+class CVector4D;
+struct SColor4ub;
+
 namespace
 {