Add Text rendering

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

CopiumEngine/ext/include/msdf-atlas-gen/RectanglePacker.h

@@ -0,0 +1,30 @@
+
+#pragma once
+
+#include <vector>
+#include "Rectangle.h"
+
+namespace msdf_atlas {
+
+/// Guillotine 2D single bin packer
+class RectanglePacker {
+
+public:
+    RectanglePacker();
+    RectanglePacker(int width, int height);
+    /// Expands the packing area - both width and height must be greater or equal to the previous value
+    void expand(int width, int height);
+    /// Packs the rectangle array, returns how many didn't fit (0 on success)
+    int pack(Rectangle *rectangles, int count);
+    int pack(OrientedRectangle *rectangles, int count);
+
+private:
+    std::vector<Rectangle> spaces;
+
+    static int rateFit(int w, int h, int sw, int sh);
+
+    void splitSpace(int index, int w, int h);
+
+};
+
+}