clean up namespaces

include/sp/protocol/Field.h

@@ -1,7 +1,7 @@
 #pragma once
 
 #include <sp/common/DataBuffer.h>
-#include <sp/protocol/Templates.h>
+#include <sp/common/Templates.h>
 
 namespace sp {
 
@@ -63,6 +63,8 @@ class FieldWriter {
 	DataBuffer& m_Buffer;
 };
 
+namespace details {
+
 template <typename... TFields>
 struct FieldsBuilder {};
 
@@ -71,15 +73,15 @@ struct FieldsBuilder<> {
 	using Type = std::tuple<>;
 };
 
-template<typename... TFields>
+template <typename... TFields>
 struct FieldsBuilder<std::tuple<TFields...>> {
 	using Type = typename FieldsBuilder<TFields...>::Type;
 };
 
-
 template <typename TField, typename... TFields>
 struct FieldsBuilder<TField, TFields...> {
 	using Type = sp::tuple_cat_t<std::tuple<Field<TField>>, typename FieldsBuilder<TFields...>::Type>;
 };
+}  // namespace details
 
 }  // namespace sp