chore: 외부 에셋 권한 및 줄바꿈 재기록 반영

- Assets/External 하위 샘플 및 서드파티 에셋 파일의 실행 비트 변경을 별도 커밋으로 분리
- PolygonGeneric, SidekickCharacters, Synty 도구 자산 전반의 줄바꿈 및 재직렬화 차이를 그대로 보존
- 프로젝트 고유 로직 변경과 분리해 이후 히스토리에서 외부 에셋 노이즈 범위를 식별하기 쉽게 정리

Assets/External/Animations/AnimationBaseLocomotion/Samples/Scripts/InputSystem/Controls.cs

@@ -2,7 +2,7 @@
 // <auto-generated>
 //     This code was auto-generated by com.unity.inputsystem:InputActionCodeGenerator
 //     version 1.18.0
-//     from Assets/Synty/AnimationBaseLocomotion/Samples/Scripts/InputSystem/Controls.inputactions
+//     from Assets/External/Animations/AnimationBaseLocomotion/Samples/Scripts/InputSystem/Controls.inputactions
 //
 //     Changes to this file may cause incorrect behavior and will be lost if
 //     the code is regenerated.
@@ -16,7 +16,7 @@ using UnityEngine.InputSystem;
 using UnityEngine.InputSystem.Utilities;
 
 /// <summary>
-/// Provides programmatic access to <see cref="InputActionAsset" />, <see cref="InputActionMap" />, <see cref="InputAction" /> and <see cref="InputControlScheme" /> instances defined in asset "Assets/Synty/AnimationBaseLocomotion/Samples/Scripts/InputSystem/Controls.inputactions".
+/// Provides programmatic access to <see cref="InputActionAsset" />, <see cref="InputActionMap" />, <see cref="InputAction" /> and <see cref="InputControlScheme" /> instances defined in asset "Assets/External/Animations/AnimationBaseLocomotion/Samples/Scripts/InputSystem/Controls.inputactions".
 /// </summary>
 /// <remarks>
 /// This class is source generated and any manual edits will be discarded if the associated asset is reimported or modified.