Implemented tokens and timestamps in Python API (#205)

@@ -14,7 +14,12 @@ namespace sherpa_onnx {
 static void PybindOnlineRecognizerResult(py::module *m) {
   using PyClass = OnlineRecognizerResult;
   py::class_<PyClass>(*m, "OnlineRecognizerResult")
-      .def_property_readonly("text", [](PyClass &self) { return self.text; });
+      .def_property_readonly(
+          "text", [](PyClass &self) -> std::string { return self.text; })
+      .def_property_readonly(
+          "tokens", [](PyClass &self) -> std::vector<std::string> { return self.tokens; })
+      .def_property_readonly(
+          "timestamps", [](PyClass &self) -> std::vector<float> { return self.timestamps; });
 }
 
 static void PybindOnlineRecognizerConfig(py::module *m) {

@@ -149,6 +149,12 @@ class OnlineRecognizer(object):
     def get_result(self, s: OnlineStream) -> str:
         return self.recognizer.get_result(s).text.strip()
 
+    def tokens(self, s: OnlineStream) -> List[str]:
+        return self.recognizer.get_result(s).tokens
+
+    def timestamps(self, s: OnlineStream) -> List[float]:
+        return self.recognizer.get_result(s).timestamps
+
     def is_endpoint(self, s: OnlineStream) -> bool:
         return self.recognizer.is_endpoint(s)