refactor: use new layout for YYCC

testbench/yycc/carton/pycodec.cpp

@@ -0,0 +1,10 @@
+#include <gtest/gtest.h>
+#include <yycc.hpp>
+#include <yycc/carton/pycodec.hpp>
+#include "../../shared/literals.hpp"
+
+#define ENC ::yycc::carton::pycodec
+
+namespace yycctest::carton::pycodec {
+
+}