Prepare simple API interface

Support/include/FontWriter/font_writer.hpp

@@ -1,3 +1,8 @@
 #pragma once
+#include "Type/types.hpp"
 
-void test();
+namespace JabyEngine {
+    struct FontWriter {
+        static void setup(GPU::PositionU16 vram_pos, const FontInfo& font_info);
+    };
+}