fix transfer

include/client.hpp

@@ -1,7 +1,4 @@
-#ifdef __SWITCH__
 namespace fs = std::filesystem;
-#else
-namespace fs = std::__fs::filesystem;
-#endif
+using path = fs::path;
 
-int transfer_files(fs::path directory, char** filenames, int file_count);
+int transfer_files(path directory);