feat: 젬 장착 제약 시스템 추가

- 기반 스킬 분류를 도입하고 젬별 장착 가능 스킬 타입 조건을 추가함
- 동일 젬 중복 장착, 카테고리 상호 배타, 특정 젬 상호 배타를 로드아웃 검증에 반영함
- 테스트용 젬/스킬 자산과 디버그 생성 메뉴를 새 제약 구조에 맞게 갱신함
- Unity 재컴파일과 콘솔 확인으로 신규 컴파일 에러가 없음을 검증함

Assets/_Game/Data/SkillGems/Data_SkillGem_Player_강인함.asset

@@ -18,6 +18,9 @@ MonoBehaviour:
     \uC82C"
   icon: {fileID: 0}
   category: 3
+  allowedSkillTypes: 63
+  incompatibleCategories: 
+  incompatibleGems: []
   manaCostMultiplier: 1.05
   cooldownMultiplier: 1.05
   castSpeedMultiplier: 1

Assets/_Game/Data/SkillGems/Data_SkillGem_Player_관통.asset

@@ -17,6 +17,9 @@ MonoBehaviour:
     \uD14C\uC2A4\uD2B8\uC6A9 \uACF5\uACA9 \uC82C"
   icon: {fileID: 0}
   category: 1
+  allowedSkillTypes: 1
+  incompatibleCategories: 
+  incompatibleGems: []
   manaCostMultiplier: 1
   cooldownMultiplier: 1
   castSpeedMultiplier: 1

Assets/_Game/Data/SkillGems/Data_SkillGem_Player_도전자.asset

@@ -17,6 +17,9 @@ MonoBehaviour:
     \uC5B9\uB294 \uD14C\uC2A4\uD2B8\uC6A9 \uC82C"
   icon: {fileID: 0}
   category: 2
+  allowedSkillTypes: 1
+  incompatibleCategories: 
+  incompatibleGems: []
   manaCostMultiplier: 1
   cooldownMultiplier: 1
   castSpeedMultiplier: 1

Assets/_Game/Data/SkillGems/Data_SkillGem_Player_수호.asset

@@ -17,6 +17,9 @@ MonoBehaviour:
     \uC5B9\uB294 \uD14C\uC2A4\uD2B8\uC6A9 \uC82C"
   icon: {fileID: 0}
   category: 4
+  allowedSkillTypes: 1
+  incompatibleCategories: 
+  incompatibleGems: []
   manaCostMultiplier: 1.05
   cooldownMultiplier: 1.1
   castSpeedMultiplier: 1

Assets/_Game/Data/SkillGems/Data_SkillGem_Player_약화.asset

@@ -17,6 +17,9 @@ MonoBehaviour:
     \uB514\uBC84\uD504\uB97C \uBD80\uC5EC\uD558\uB294 \uC81C\uC5B4 \uC82C"
   icon: {fileID: 0}
   category: 5
+  allowedSkillTypes: 63
+  incompatibleCategories: 
+  incompatibleGems: []
   manaCostMultiplier: 1.05
   cooldownMultiplier: 1.05
   castSpeedMultiplier: 1

Assets/_Game/Data/SkillGems/Data_SkillGem_Player_연속.asset

@@ -17,6 +17,9 @@ MonoBehaviour:
     \uC2DC\uC804\uD558\uB294 \uD14C\uC2A4\uD2B8\uC6A9 \uC82C"
   icon: {fileID: 0}
   category: 6
+  allowedSkillTypes: 1
+  incompatibleCategories: 
+  incompatibleGems: []
   manaCostMultiplier: 1.2
   cooldownMultiplier: 1.15
   castSpeedMultiplier: 1.1

Assets/_Game/Data/SkillGems/Data_SkillGem_Player_예리함.asset

@@ -17,6 +17,9 @@ MonoBehaviour:
     \uD14C\uC2A4\uD2B8\uC6A9 \uACF5\uACA9 \uC82C"
   icon: {fileID: 0}
   category: 1
+  allowedSkillTypes: 1
+  incompatibleCategories: 
+  incompatibleGems: []
   manaCostMultiplier: 1
   cooldownMultiplier: 1
   castSpeedMultiplier: 1

Assets/_Game/Data/SkillGems/Data_SkillGem_Player_충격.asset

@@ -17,6 +17,9 @@ MonoBehaviour:
     \uD14C\uC2A4\uD2B8\uC6A9 \uACF5\uACA9 \uC82C"
   icon: {fileID: 0}
   category: 1
+  allowedSkillTypes: 1
+  incompatibleCategories: 
+  incompatibleGems: []
   manaCostMultiplier: 1
   cooldownMultiplier: 1
   castSpeedMultiplier: 1

Assets/_Game/Data/SkillGems/Data_SkillGem_Player_파쇄.asset

@@ -17,6 +17,9 @@ MonoBehaviour:
     \uAC15\uD654\uD558\uB294 \uD14C\uC2A4\uD2B8\uC6A9 \uC82C"
   icon: {fileID: 0}
   category: 1
+  allowedSkillTypes: 1
+  incompatibleCategories: 
+  incompatibleGems: []
   manaCostMultiplier: 1.15
   cooldownMultiplier: 1.1
   castSpeedMultiplier: 1