add products

api/main.proto

@@ -17,6 +17,11 @@ service CRM {
       get: "/positions/{id}"
     };
   }
+  rpc GetProduct(GetProductReq) returns (ProductRsp) {
+    option (google.api.http) = {
+      get: "/products/{id}"
+    };
+  }
 }
 
 message GetCatalogReq {}
@@ -75,3 +80,11 @@ message Characteristic {
   string name = 1;
   string value = 2;
 }
+
+message GetProductReq{
+  int64 id = 1;
+}
+
+message ProductRsp {
+  Product product = 1;
+}