input_engine: std::move engine name where applicable

We can allow the name to be moved into, allowing allocations to be
avoided.

src/input_common/drivers/gc_adapter.cpp

@@ -69,7 +69,7 @@ private:
     libusb_device_handle* handle{};
 };
 
-GCAdapter::GCAdapter(const std::string& input_engine_) : InputEngine(input_engine_) {
+GCAdapter::GCAdapter(std::string input_engine_) : InputEngine(std::move(input_engine_)) {
     if (usb_adapter_handle) {
         return;
     }