Implement gallery showcase

src/main/java/emu/nebula/data/GameData.java

@@ -49,6 +49,7 @@ public class GameData {
     
     @Getter private static DataTable<WorldClassDef> WorldClassDataTable = new DataTable<>();
     @Getter private static DataTable<GuideGroupDef> GuideGroupDataTable = new DataTable<>();
+    @Getter private static DataTable<HandbookDef> HandbookDataTable = new DataTable<>();
     @Getter private static DataTable<StoryDef> StoryDataTable = new DataTable<>();
     @Getter private static DataTable<StorySetSectionDef> StorySetSectionDataTable = new DataTable<>();
     

src/main/java/emu/nebula/data/resources/HandbookDef.java

@@ -0,0 +1,24 @@
+package emu.nebula.data.resources;
+
+import emu.nebula.data.BaseDef;
+import emu.nebula.data.ResourceType;
+import emu.nebula.data.ResourceType.LoadPriority;
+import lombok.Getter;
+
+@Getter
+@ResourceType(name = "Handbook.json", loadPriority = LoadPriority.LOW)
+public class HandbookDef extends BaseDef {
+    private int Id;
+    private int Index;
+    private int Type;
+    
+    @Override
+    public int getId() {
+        return Id;
+    }
+    
+    @Override
+    public void onLoad() {
+        
+    }
+}