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.test/0.cc

@@ -0,0 +1,31 @@
+static_assert( __cplusplus > 2023'00 );
+
+#include "../NamedOperator.h"
+
+#include <Alepha/Testing/test.h>
+#include <Alepha/Testing/TableTest.h>
+
+#include <Alepha/Utility/enroll.h>
+
+static auto init= Alepha::Utility::enroll <=[]
+{
+	using namespace Alepha::Testing::exports;
+	using namespace Alepha::Utility::NamedOperator_m;
+	using namespace Alepha::literals::enum_literals;
+
+	"Does the named operator system have the expected basic functionality?"_test <= TableTest
+	<
+		[]( const int lhs, const OperatorName name, const int rhs )
+		{
+			return getOperatorMap< int >().at( name )( lhs, rhs );
+		}
+	>
+	::Cases
+	{
+		{ "addition", { 1, "add"_value, 1 }, 2 },
+		{ "subtraction", { 1, "sub"_value, 1 }, 0 },
+		{ "multiplication", { 5, "mul"_value, 5 }, 25 },
+		{ "modulus", { 9, "mod"_value, 5 }, 4 },
+		{ "division", { 5, "idiv"_value, 3 }, 1 },
+	};
+};

Utility/NamedOperator.test/CMakeLists.txt

@@ -0,0 +1 @@
+unit_test( 0 )