Copy some files from Grasscutter-Quests

NOT completely finished, nor is it completely done. Protocol issues remain! (including lack of packet IDs)

src/main/java/emu/grasscutter/data/excels/codex/CodexMaterialData.java

@@ -0,0 +1,29 @@
+package emu.grasscutter.data.excels.codex;
+
+import emu.grasscutter.data.GameData;
+import emu.grasscutter.data.GameResource;
+import emu.grasscutter.data.ResourceType;
+
+@ResourceType(name = {"MaterialCodexExcelConfigData.json"})
+public class CodexMaterialData extends GameResource {
+    private int Id;
+    private int materialId;
+    private int sortOrder;
+
+    public int getSortOrder() {
+        return sortOrder;
+    }
+
+    public int getMaterialId() {
+        return materialId;
+    }
+
+    public int getId() {
+        return Id;
+    }
+
+    @Override
+    public void onLoad() {
+        GameData.getCodexMaterialDataIdMap().put(this.getMaterialId(), this);
+    }
+}