Prepare simple API interface

Support/include/FontWriter/Type/types.hpp

@@ -0,0 +1,9 @@
+#pragma once
+#include <PSX/GPU/gpu_types.hpp>
+
+namespace JabyEngine {
+    struct FontInfo {
+        GPU::SizeU16 VRAMSize;
+        GPU::SizeU16 FontSize;
+    };
+}

Support/include/FontWriter/default_font.hpp

@@ -0,0 +1,13 @@
+#pragma once
+#include "Type/types.hpp"
+
+namespace JabyEngine {
+    struct DefaultFont {
+        static constexpr auto Info = FontInfo {
+            .VRAMSize = {64, 80},
+            .FontSize = {12, 16}
+        };
+
+        static void load(GPU::PositionU16 vram_dst);
+    };
+}

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);
+    };
+}