add:插件系统

Plugins/SDK/NotificationType.cs

@@ -0,0 +1,28 @@
+namespace InkCanvasForClass.PluginSdk
+{
+    /// <summary>
+    /// 通知类型枚举
+    /// </summary>
+    public enum NotificationType
+    {
+        /// <summary>
+        /// 信息
+        /// </summary>
+        Info,
+
+        /// <summary>
+        /// 成功
+        /// </summary>
+        Success,
+
+        /// <summary>
+        /// 警告
+        /// </summary>
+        Warning,
+
+        /// <summary>
+        /// 错误
+        /// </summary>
+        Error
+    }
+}