Rewrite includes inside the library to use <catch2/> form

src/catch2/catch_registry_hub.cpp

@@ -6,16 +6,16 @@
  *  file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
  */
 
-#include "catch_interfaces_registry_hub.h"
+#include <catch2/catch_interfaces_registry_hub.h>
 
-#include "catch_context.h"
-#include "catch_test_case_registry_impl.h"
-#include "catch_reporter_registry.h"
-#include "catch_exception_translator_registry.h"
-#include "catch_tag_alias_registry.h"
-#include "catch_startup_exception_registry.h"
-#include "catch_singletons.hpp"
-#include "catch_enum_values_registry.h"
+#include <catch2/catch_context.h>
+#include <catch2/catch_test_case_registry_impl.h>
+#include <catch2/catch_reporter_registry.h>
+#include <catch2/catch_exception_translator_registry.h>
+#include <catch2/catch_tag_alias_registry.h>
+#include <catch2/catch_startup_exception_registry.h>
+#include <catch2/catch_singletons.hpp>
+#include <catch2/catch_enum_values_registry.h>
 
 namespace Catch {