[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/PluginContractKey.cs

@@ -0,0 +1,23 @@
+using System.Collections.Generic;
+
+namespace PlayFab
+{
+    public struct PluginContractKey
+    {
+        public PluginContract _pluginContract;
+        public string _pluginName;
+    }
+
+    public class PluginContractKeyComparator : EqualityComparer<PluginContractKey>
+    {
+        public override bool Equals(PluginContractKey x, PluginContractKey y)
+        {
+            return x._pluginContract == y._pluginContract && x._pluginName.Equals(y._pluginName);
+        }
+
+        public override int GetHashCode(PluginContractKey obj)
+        {
+            return (int)obj._pluginContract + obj._pluginName.GetHashCode();
+        }
+    }
+}