chore: unity-cli-connector 패키지 추가

- Unity Editor HTTP 제어를 위한 unity-cli-connector 패키지 추가
- Claude 작업 환경 허용 명령어 목록 업데이트

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

Packages/manifest.json

@@ -19,6 +19,7 @@
     "com.unity.timeline": "1.8.10",
     "com.unity.ugui": "2.0.0",
     "com.unity.visualscripting": "1.9.9",
+    "com.youngwoocho02.unity-cli-connector": "https://github.com/youngwoocho02/unity-cli.git?path=unity-connector",
     "com.unity.modules.accessibility": "1.0.0",
     "com.unity.modules.adaptiveperformance": "1.0.0",
     "com.unity.modules.ai": "1.0.0",