Add prototype gameplay loop with character/battlefield assets and server game APIs.

Co-authored-by: Cursor <cursoragent@cursor.com>

AIClient/Packages/manifest.json

@@ -2,15 +2,16 @@
   "dependencies": {
     "com.code-philosophy.hybridclr": "https://gitee.com/focus-creative-games/hybridclr_unity.git",
     "com.tuyoogame.yooasset": "3.0.6",
+    "com.unity.2d.sprite": "1.0.0",
     "com.unity.collab-proxy": "2.7.1",
     "com.unity.feature.development": "1.0.1",
+    "com.unity.nuget.newtonsoft-json": "3.2.1",
     "com.unity.pipeline": "file:com.unity.pipeline",
     "com.unity.render-pipelines.universal": "14.0.12",
     "com.unity.scriptablebuildpipeline": "1.21.25",
     "com.unity.textmeshpro": "3.0.7",
     "com.unity.timeline": "1.7.7",
     "com.unity.ugui": "1.0.0",
-    "com.unity.nuget.newtonsoft-json": "3.2.1",
     "com.unity.visualscripting": "1.9.4",
     "com.unity.modules.ai": "1.0.0",
     "com.unity.modules.androidjni": "1.0.0",