Optimize parameter passing to avoid unnecessary copying

src/logic/scripting/scripting_hud.cpp

@@ -40,7 +40,7 @@ void scripting::on_frontend_close() {
     scripting::hud = nullptr;
 }
 
-void scripting::load_hud_script(scriptenv senv, std::string packid, fs::path file) {
+void scripting::load_hud_script(const scriptenv& senv, const std::string& packid, const fs::path& file) {
     int env = *senv;
     std::string src = files::read_string(file);
     logger.info() << "loading script " << file.u8string();