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/TextMesh Pro/Examples & Extras/Scripts/EnvMapAnimator.cs

@@ -0,0 +1,35 @@
+using UnityEngine;
+using System.Collections;
+using TMPro;
+
+public class EnvMapAnimator : MonoBehaviour {
+
+    //private Vector3 TranslationSpeeds;
+    public Vector3 RotationSpeeds;
+    private TMP_Text m_textMeshPro;
+    private Material m_material;
+    
+
+    void Awake()
+    {
+        //Debug.Log("Awake() on Script called.");
+        m_textMeshPro = GetComponent<TMP_Text>();
+        m_material = m_textMeshPro.fontSharedMaterial;
+    }
+
+    // Use this for initialization
+	IEnumerator Start ()
+    {
+        Matrix4x4 matrix = new Matrix4x4(); 
+        
+        while (true)
+        {
+            //matrix.SetTRS(new Vector3 (Time.time * TranslationSpeeds.x, Time.time * TranslationSpeeds.y, Time.time * TranslationSpeeds.z), Quaternion.Euler(Time.time * RotationSpeeds.x, Time.time * RotationSpeeds.y , Time.time * RotationSpeeds.z), Vector3.one);
+             matrix.SetTRS(Vector3.zero, Quaternion.Euler(Time.time * RotationSpeeds.x, Time.time * RotationSpeeds.y , Time.time * RotationSpeeds.z), Vector3.one);
+
+            m_material.SetMatrix("_EnvMatrix", matrix);
+
+            yield return null;
+        }
+	}
+}