wip setup core

src/core/matchers/RGBMatcher.h

@@ -0,0 +1,12 @@
+#pragma once
+
+
+#include "Matcher.h"
+
+
+namespace core {
+class RGBMatcher : Matcher {
+  float distance(const Colour a, const Colour b);
+  float luminance(const Colour a);
+};
+}