增加撤销与启动，详见：#I3ILBG

调整工程结构，采用模块化机制

OpenAuth.App/FlowInstance/Request/StartFlowInstanceReq.cs

@@ -0,0 +1,14 @@
+namespace OpenAuth.App.Request
+{
+    /// <summary>
+    /// 启动流程
+    /// </summary>
+    public class StartFlowInstanceReq
+    {
+        /// <summary>
+        /// 启动流程的实例Id
+        /// </summary>
+        public string FlowInstanceId { get; set; }
+
+    }
+}