Feature/add about screen (#1)

Adds the "About" scene, which displays the version info and credits. The user can scroll up/down through this screen.

include/scenes/AboutScene.h

@@ -0,0 +1,52 @@
+#ifndef _ABOUTSCENE_H
+#define _ABOUTSCENE_H
+
+#include "scenes/AbstractUIScene.h"
+#include "widget/ScrollWidget.h"
+#include "widget/ImageWidget.h"
+#include "widget/TextWidget.h"
+
+/**
+ * @brief This scene shows the version number and credits of the PokeMe64 project.
+ */
+class AboutScene : public AbstractUIScene
+{
+public:
+    AboutScene(SceneDependencies& deps, void* context);
+    virtual ~AboutScene();
+
+    void init() override;
+    void destroy() override;
+
+    bool handleUserInput(joypad_port_t port, const joypad_inputs_t& inputs) override;
+    void render(RDPQGraphics& gfx, const Rectangle& sceneBounds) override;
+protected:
+private:
+    uint8_t fontIdArial_;
+    uint8_t fontArialStyleWhiteId_;
+    sprite_t* logoLibDragon_;
+    sprite_t* logoBulbagarden_;
+    sprite_t* logoRetroGameMechanicsExplained_;
+    sprite_t* logoDataCrystal_;
+    sprite_t* logoPKHEX_;
+    sprite_t* logoGBDevIO_;
+    sprite_t* logoNESDevWiki_;
+    ScrollWidget scrollWidget_;
+    TextWidget headerText_;
+    ImageWidget imgDragonWidget_;
+    ImageWidget imgBulbagardenWidget_;
+    ImageWidget imgRetroGameMechanicsExplained_;
+    ImageWidget imgDataCrystal_;
+    TextWidget dataCrystalText_;
+    ImageWidget imgPKHEX_;
+    TextWidget PKHEXText_;
+    TextWidget pretPokeCrystalText_;
+    ImageWidget imgGBDevIO_;
+    TextWidget gbDevIOText_;
+    ImageWidget imgNESDevWiki_;
+    TextWidget otherCreditsText_;
+    WidgetFocusChainSegment scrollFocusSegment_;
+    bool bButtonPressed_;
+};
+
+#endif

include/scenes/IScene.h

@@ -18,7 +18,8 @@ enum class SceneType
     MENU,
     DISTRIBUTION_POKEMON_LIST,
     STATS,
-    TEST
+    TEST,
+    ABOUT
 };
 
 typedef struct SceneDependencies