Add type & value fields to primitive json types

This aligns with how custom types are exported to JSON.

Author: dyackzan

src/json_export.cpp

@@ -16,19 +16,23 @@ bool JsonExporter::toJson(const Any& any, nlohmann::json& dst) const
 
   if(any.isString())
   {
-    dst = any.cast<std::string>();
+    dst["type"] = "string";
+    dst["value"] = any.cast<std::string>();
   }
   else if(type == typeid(int64_t))
   {
-    dst = any.cast<int64_t>();
+    dst["type"] = "int64_t";
+    dst["value"] = any.cast<int64_t>();
   }
   else if(type == typeid(uint64_t))
   {
-    dst = any.cast<uint64_t>();
+    dst["type"] = "uint64_t";
+    dst["value"] = any.cast<uint64_t>();
   }
   else if(type == typeid(double))
   {
-    dst = any.cast<double>();
+    dst["type"] = "double";
+    dst["value"] = any.cast<double>();
   }
   else
   {