refactor:规范代码格式和注释

src/Hua.Todo.Maui/Platforms/Android/MainActivity.cs

@@ -5,8 +5,15 @@ using Android.OS;
 namespace Hua.Todo.Maui;
 
 [Activity(Theme = "@style/Maui.SplashTheme", MainLauncher = true, LaunchMode = LaunchMode.SingleTop, ConfigurationChanges = ConfigChanges.ScreenSize | ConfigChanges.Orientation | ConfigChanges.UiMode | ConfigChanges.ScreenLayout | ConfigChanges.SmallestScreenSize | ConfigChanges.Density)]
+/// <summary>
+/// Android 平台入口 Activity。
+/// </summary>
 public class MainActivity : MauiAppCompatActivity
 {
+    /// <summary>
+    /// Activity 创建时回调。
+    /// </summary>
+    /// <param name="savedInstanceState">上次保存状态。</param>
     protected override void OnCreate(Bundle? savedInstanceState)
     {
         base.OnCreate(savedInstanceState);