Added Observation Scene to show the Replay

Packages/manifest.json

@@ -3,6 +3,7 @@
     "com.cysharp.unitask": "https://github.com/Cysharp/UniTask.git?path=src/UniTask/Assets/Plugins/UniTask",
     "com.github-glitchenzo.nugetforunity": "https://github.com/GlitchEnzo/NuGetForUnity.git?path=/src/NuGetForUnity",
     "com.unity.burst": "1.8.21",
+    "com.unity.cinemachine": "3.1.3",
     "com.unity.collab-proxy": "2.8.2",
     "com.unity.feature.development": "1.0.2",
     "com.unity.inputsystem": "1.14.0",
@@ -15,6 +16,7 @@
     "com.unity.services.authentication": "3.4.1",
     "com.unity.services.multiplayer": "1.1.0",
     "com.unity.services.vivox": "16.6.0",
+    "com.unity.timeline": "1.8.8",
     "com.unity.transport": "2.5.1",
     "com.unity.xr.hands": "1.5.0",
     "com.unity.xr.interaction.toolkit": "3.0.8",