Add a NamedOperator facility to Alepha.

This permits naming operators via an enhanced enum and then
looking them up.  This is a useful component for quick
scripting language functionalities.

Utility/NamedOperator.h

@@ -0,0 +1,64 @@
+static_assert( __cplusplus > 2023'00 );
+
+#pragma once
+
+#include <Alepha/Alepha.h>
+
+#include <map>
+#include <functional>
+#include <type_traits>
+
+#include <Alepha/Enum.h>
+
+namespace Alepha::Hydrogen::Utility  ::detail::  NamedOperator_m
+{
+	inline namespace exports
+	{
+		using OperatorName= Enum
+		<
+			"add"_value,
+			"sub"_value,
+			"mul"_value,
+			"mod"_value,
+			"idiv"_value
+		>;
+
+	}
+
+	struct comparator
+	{
+		constexpr auto
+		operator () ( const OperatorName &lhs, const OperatorName &rhs ) const
+		{
+			return lhs.get_index() < rhs.get_index();
+		}
+	};
+
+	namespace exports
+	{
+		template< typename Type >
+		auto
+		getOperatorMap()
+		{
+			std::map< OperatorName, std::function< Type ( Type, Type ) >, comparator > rv
+			{
+				{ "add"_value, std::plus<>{} },
+				{ "sub"_value, std::minus<>{} },
+				{ "mul"_value, std::multiplies<>{} },
+				{ "mod"_value, std::modulus<>{} },
+			};
+
+			if constexpr( std::is_integral_v< Type > )
+			{
+				rv[ "idiv"_value ]= std::divides<>{};
+			}
+
+			return rv;
+		};
+	}
+}
+
+namespace Alepha::Hydrogen::Utility::inline exports::inline NamedOperator_m
+{
+	using namespace detail::NamedOperator_m::exports;
+}