增加任意格式读取

SpineViewer/Spine/SkeletonConverter.cs

@@ -111,6 +111,29 @@ namespace SpineViewer.Spine
             root.WriteTo(writer);
         }
 
+        /// <summary>
+        /// 读取骨骼文件
+        /// </summary>
+        public JsonObject Read(string path)
+        {
+            try
+            {
+                return ReadBinary(path);
+            }
+            catch
+            {
+                try
+                {
+                    return ReadJson(path);
+                }
+                catch
+                {
+                    // 都不行就报错
+                    throw new InvalidDataException($"Unknown skeleton file format {path}");
+                }
+            }
+        }
+
         /// <summary>
         /// 转换到目标版本
         /// </summary>