rnnlm model inference supports num_threads setting (#169)

Co-authored-by: cuidongcai1035 <cuidongcai1035@wezhuiyi.com>

sherpa-onnx/csrc/online-lm.cc

@@ -13,7 +13,8 @@
 
 namespace sherpa_onnx {
 
-std::unique_ptr<OnlineLM> OnlineLM::Create(const OnlineLMConfig &config) {
+std::unique_ptr<OnlineLM> OnlineLM::Create(
+    const OnlineRecognizerConfig &config) {
   return std::make_unique<OnlineRnnLM>(config);
 }