Add Text rendering

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

CopiumEngine/ext/include/msdf-atlas-gen/shadron-preview-generator.h

@@ -0,0 +1,14 @@
+
+#pragma once
+
+#include <msdfgen.h>
+#include <msdfgen-ext.h>
+#include "types.h"
+#include "FontGeometry.h"
+
+namespace msdf_atlas {
+
+/// Generates a Shadron script that displays a string using the generated atlas
+bool generateShadronPreview(const FontGeometry *fonts, int fontCount, ImageType atlasType, int atlasWidth, int atlasHeight, double pxRange, const unicode_t *text, const char *imageFilename, bool fullRange, const char *outputFilename);
+
+}