repair the include reordering

The previous pass dropped imports into the middle of HR_RETURN's
line continuations, breaking nvrenderer_d3d12.cpp, and its scan gave up
on the first line of any file with a BOM - which is why nvtexture.cpp
still had five includes sitting after its imports. Rewritten to skip
macro continuations, tolerate a BOM, and insert only immediately before
the first import.

betterRenderer/renderer/source/track_batching.cpp

@@ -13,11 +13,11 @@
 #include <unordered_map>
 #include <utility>
 #include <vector>
+#include "utilities/utilities_macros.h"
 import eu07.utilities.timer;
 import eu07.simcore;
 import eu07.simulation.simulation;
 import eu07.glm;
-#include "utilities/utilities_macros.h"
 import eu07.utilities.utilities;
 import eu07.utilities.float3d;