Qt: Replace QMap with std::map

This should reduce the amount of string conversions during list refreshes

Utilities/File.cpp

@@ -2634,7 +2634,7 @@ bool fs::pending_file::commit(bool overwrite)
 	return false;
 }
 
-stx::generator<fs::dir_entry&> fs::list_dir_recursively(std::string path)
+stx::generator<fs::dir_entry&> fs::list_dir_recursively(const std::string& path)
 {
 	for (auto& entry : fs::dir(path))
 	{

Utilities/File.h

@@ -837,5 +837,5 @@ namespace fs
 
 	file make_gather(std::vector<file>);
 
-	stx::generator<dir_entry&> list_dir_recursively(std::string path);
+	stx::generator<dir_entry&> list_dir_recursively(const std::string& path);
 }

Utilities/Thread.cpp

@@ -2731,7 +2731,7 @@ void thread_base::exec()
 
 [[noreturn]] void thread_ctrl::emergency_exit(std::string_view reason)
 {
-	if (std::string info = dump_useful_thread_info(); !info.empty())
+	if (const std::string info = dump_useful_thread_info(); !info.empty())
 	{
 		sys_log.notice("\n%s", info);
 	}