Make fs::get_parent_dir/fs::pending_file use string_view as argument

Utilities/File.h

@@ -159,7 +159,7 @@ namespace fs
 	shared_ptr<device_base> set_virtual_device(const std::string& name, shared_ptr<device_base> device);
 
 	// Try to get parent directory (returns empty string on failure)
-	std::string get_parent_dir(const std::string& path, u32 levels = 1);
+	std::string get_parent_dir(std::string_view path, u32 levels = 1);
 
 	// Get file information
 	bool stat(const std::string& path, stat_t& info);
@@ -637,7 +637,7 @@ namespace fs
 		// This is meant to modify files atomically, overwriting is likely
 		bool commit(bool overwrite = true);
 
-		pending_file(const std::string& path);
+		pending_file(std::string_view path);
 		pending_file(const pending_file&) = delete;
 		pending_file& operator=(const pending_file&) = delete;
 		~pending_file();