IP库阶段性提交（未完成）

pkg/rpc/protos/models/model_region_town.proto

@@ -0,0 +1,18 @@
+syntax = "proto3";
+option go_package = "./pb";
+
+package pb;
+
+import "models/model_region_city.proto";
+
+message RegionTown {
+	int64 id = 1;
+	string name = 2;
+	repeated string codes = 3;
+	int64 regionCityId = 4;
+	string customName = 5;
+	repeated string customCodes = 6;
+	string displayName = 7;
+
+	RegionCity regionCity = 30;
+}