Extracted stand-alone micro-library, tbc_text_format.h, from catch_text.h.

- use this version in clara.h so clara can stand alone.

include/internal/catch_impl.hpp

@@ -28,7 +28,6 @@
 #include "catch_tags.hpp"
 #include "catch_test_spec.hpp"
 #include "catch_version.hpp"
-#include "catch_text.hpp"
 #include "catch_message.hpp"
 #include "catch_legacy_reporter_adapter.hpp"
 #include "catch_timer.hpp"