实现用户订单、在线支付接口（商业版可用）

pkg/rpc/protos/models/model_user_order.proto

@@ -0,0 +1,28 @@
+syntax = "proto3";
+option go_package = "./pb";
+
+package pb;
+
+import "models/model_user.proto";
+import "models/model_order_method.proto";
+
+// 用户订单
+message UserOrder {
+	int64 userId = 2;
+	string code = 3;
+	string type = 4;
+	int64 orderMethodId = 5;
+	string status = 6;
+	float amount = 7;
+	bytes paramsJSON = 8;
+	int64 createdAt = 9;
+	int64 cancelledAt = 10;
+	int64 finishedAt = 11;
+	bool isExpired = 12;
+
+	User user = 30;
+	OrderMethod orderMethod = 31;
+
+	bool canPay = 32; // 是否可以支付
+	string payURL = 33; // 构造后的支付URL
+}