chore: Assets 디렉토리 구조 정리 및 네이밍 컨벤션 적용

- Assets/_Game/ 하위로 게임 에셋 통합
- External/ 패키지 벤더별 분류 (Synty, Animations, UI)
- 에셋 네이밍 컨벤션 확립 및 적용
  (Data_Skill_, Data_SkillEffect_, Prefab_, Anim_, Model_, BT_ 등)
- pre-commit hook으로 네이밍 컨벤션 자동 검사 추가
- RESTRUCTURE_CHECKLIST.md 작성

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Assets/External/Models/PolygonGeneric/Scripts/Generic_SimpleTranslate.cs

@@ -0,0 +1,31 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class Generic_SimpleTranslate : MonoBehaviour
+{
+    public bool moveX;
+    public float moveXSpeed = 2f;
+    public bool moveY;
+    public float moveYSpeed = 2f;
+    public bool moveZ;
+    public float moveZSpeed = 2f;
+
+    void Update()
+    {
+        if (moveX == true)
+        {
+            transform.Translate(Vector3.left * Time.deltaTime * moveXSpeed);
+        }
+        if (moveY == true)
+        {
+            transform.Translate(Vector3.up * Time.deltaTime * moveYSpeed);
+        }
+
+        if (moveZ == true)
+        {
+            transform.Translate(Vector3.back * Time.deltaTime * moveZSpeed);
+        }
+    }
+}
+