Add Text rendering

- Add FreeType as dependency
- Add MsdfGen as dependency
- Add MsdfAtlasGen as dependency

CopiumEngine/ext/include/msdf-atlas-gen/json-export.h

@@ -0,0 +1,14 @@
+
+#pragma once
+
+#include <msdfgen.h>
+#include <msdfgen-ext.h>
+#include "types.h"
+#include "FontGeometry.h"
+
+namespace msdf_atlas {
+
+/// Writes the font and glyph metrics and atlas layout data into a comprehensive JSON file
+bool exportJSON(const FontGeometry *fonts, int fontCount, double fontSize, double pxRange, int atlasWidth, int atlasHeight, ImageType imageType, YDirection yDirection, const char *filename, bool kerning);
+
+}