feat(topon): 优化主线程调用及增加控制器初始化配置支持

- ToponUnityThread新增初始化方法并封装主线程安全调用接口
- ADListenerAggregator中所有回调改用ToponUnityThread切换至主线程调用
- ToponAdController新增ToponControllerOptions配置支持，支持更多初始化参数
- 实现SDK初始化前后配置的应用，支持设置渠道、区域、经纬度等选项
- 支持初始化时自动检测区域并通过回调通知
- 新增ToponControllerOptions类，实现多种初始化参数来源解析和合并
- ShowAndroidTest方法根据DebuggerKey选择不同调试器UI展示模式
- 记录并公开最近一次区域检测结果及错误信息，方便外部查询和调试

Topon_Adapter/Runtime/Scripts/ToponUnityThread.cs

@@ -0,0 +1,55 @@
+using System;
+using System.Threading;
+using UnityEngine;
+
+public static class ToponUnityThread
+{
+    private static readonly object SyncRoot = new object();
+
+    private static SynchronizationContext _unityContext;
+    private static int _mainThreadId = -1;
+
+    public static void Initialize()
+    {
+        if (SynchronizationContext.Current == null)
+        {
+            return;
+        }
+
+        lock (SyncRoot)
+        {
+            _unityContext = SynchronizationContext.Current;
+            _mainThreadId = Thread.CurrentThread.ManagedThreadId;
+        }
+    }
+
+    public static void Post(Action action)
+    {
+        if (action == null)
+        {
+            return;
+        }
+
+        var context = _unityContext;
+        var currentThreadId = Thread.CurrentThread.ManagedThreadId;
+        if (context == null || currentThreadId == _mainThreadId)
+        {
+            SafeInvoke(action);
+            return;
+        }
+
+        context.Post(_ => SafeInvoke(action), null);
+    }
+
+    private static void SafeInvoke(Action action)
+    {
+        try
+        {
+            action();
+        }
+        catch (Exception exception)
+        {
+            Debug.LogException(exception);
+        }
+    }
+}