Code refactoring (#74)

* Don't reset model state and feature extractor on endpointing

* support passing decoding_method from commandline

* Add modified_beam_search to Python API

* fix C API example

* Fix style issues

sherpa-onnx/python/csrc/display.cc

@@ -0,0 +1,18 @@
+// sherpa-onnx/python/csrc/display.cc
+//
+// Copyright (c)  2023  Xiaomi Corporation
+
+#include "sherpa-onnx/python/csrc/display.h"
+
+#include "sherpa-onnx/csrc/display.h"
+
+namespace sherpa_onnx {
+
+void PybindDisplay(py::module *m) {
+  using PyClass = Display;
+  py::class_<PyClass>(*m, "Display")
+      .def(py::init<int32_t>(), py::arg("max_word_per_line") = 60)
+      .def("print", &PyClass::Print, py::arg("idx"), py::arg("s"));
+}
+
+}  // namespace sherpa_onnx