[U] add PlayFab SDK and SNS login improvements

- Add PlayFabSDK as local package dependency
- Add PlayFabTool.cs for PlayFab API integration
- Implement LoginBySns method in TYSdkFacade
- Add Android SNS login support in SDKManager and UnityBridgeFunc
- Add Build Android With Debug menu option
- Improve exception handling and timeout management

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

sdk-intergration/LocalPackages/PlayFabSDK/Shared/Public/ISerializerPlugin.cs

@@ -0,0 +1,15 @@
+namespace PlayFab
+{
+    /// <summary>
+    /// Interface of any data serializer SDK plugin.
+    /// </summary>
+    public interface ISerializerPlugin : IPlayFabPlugin
+    {
+        T DeserializeObject<T>(string serialized);
+        T DeserializeObject<T>(string serialized, object serializerStrategy);
+        object DeserializeObject(string serialized);
+
+        string SerializeObject(object obj);
+        string SerializeObject(object obj, object serializerStrategy);
+    }
+}