feat : add load scene sync method

Assets/YooAsset/Runtime/ResourceManager/Provider/BundledSceneProvider.cs

@@ -64,6 +64,7 @@ namespace YooAsset
                 {
                     LoadSceneParameters parameters = new LoadSceneParameters(SceneMode);
                     SceneObject = SceneManager.LoadScene(MainAssetInfo.AssetPath, parameters);
+                    _steps = ESteps.Checking;
                 }
                 else
                 {

Assets/YooAsset/Runtime/ResourceManager/Provider/DatabaseSceneProvider.cs

@@ -61,6 +61,7 @@ namespace YooAsset
                 {
                     LoadSceneParameters loadSceneParameters = new LoadSceneParameters(SceneMode);
                     SceneObject = UnityEditor.SceneManagement.EditorSceneManager.LoadSceneInPlayMode(MainAssetInfo.AssetPath, loadSceneParameters);
+                    _steps = ESteps.Checking;
                 }
                 else
                 {

Assets/YooAsset/Runtime/YooAssetsExtension.cs

@@ -156,6 +156,28 @@ namespace YooAsset
         #endregion
 
         #region 场景加载
+        /// <summary>
+        /// 同步加载场景
+        /// </summary>
+        /// <param name="location">场景的定位地址</param>
+        /// <param name="sceneMode">场景加载模式</param>
+        public static SceneHandle LoadSceneSync(string location, LoadSceneMode sceneMode = LoadSceneMode.Single)
+        {
+            DebugCheckDefaultPackageValid();
+            return _defaultPackage.LoadSceneSync(location, sceneMode);
+        }
+
+        /// <summary>
+        /// 同步加载场景
+        /// </summary>
+        /// <param name="assetInfo">场景的资源信息</param>
+        /// <param name="sceneMode">场景加载模式</param>
+        public static SceneHandle LoadSceneSync(AssetInfo assetInfo, LoadSceneMode sceneMode = LoadSceneMode.Single)
+        {
+            DebugCheckDefaultPackageValid();
+            return _defaultPackage.LoadSceneSync(assetInfo, sceneMode);
+        }
+
         /// <summary>
         /// 异步加载场景
         /// </summary>