LegacyReporterAdapter unbundles INFO messages from assertion to mimic legacy behaviour

- Moved LegacyReporterAdapter out into its own file(s)

include/internal/catch_reporter_registrars.hpp

@@ -9,6 +9,7 @@
 #define TWOBLUECUBES_CATCH_REPORTER_REGISTRARS_HPP_INCLUDED
 
 #include "catch_interfaces_registry_hub.h"
+#include "catch_legacy_reporter_adapter.h"
 
 namespace Catch {