Add Roboto font, misc icons and text things

PortabilityLayer/HostFont.h

@@ -1,10 +1,15 @@
-#pragma once
+#pragma once
+
+#include <stdint.h>
 
 namespace PortabilityLayer
-{
+{
+	class HostFontRenderedGlyph;
+
 	class HostFont
 	{
 	public:
 		virtual void Destroy() = 0;
+		virtual HostFontRenderedGlyph *Render(uint32_t unicodeCodePoint, unsigned int size) = 0;
 	};
 }