adding a python api for offline decode (#110)

sherpa-onnx/python/csrc/offline-transducer-model-config.cc

@@ -0,0 +1,28 @@
+// sherpa-onnx/python/csrc/offline-transducer-model-config.cc
+//
+// Copyright (c)  2023 by manyeyes
+
+#include "sherpa-onnx/python/csrc/offline-transducer-model-config.h"
+
+
+#include <string>
+#include <vector>
+
+#include "sherpa-onnx/csrc/offline-transducer-model-config.h"
+
+namespace sherpa_onnx {
+
+void PybindOfflineTransducerModelConfig(py::module *m) {
+  using PyClass = OfflineTransducerModelConfig;
+  py::class_<PyClass>(*m, "OfflineTransducerModelConfig")
+      .def(py::init<const std::string &, const std::string &,
+               const std::string &>(),
+           py::arg("encoder_filename"), py::arg("decoder_filename"),
+           py::arg("joiner_filename"))
+      .def_readwrite("encoder_filename", &PyClass::encoder_filename)
+      .def_readwrite("decoder_filename", &PyClass::decoder_filename)
+      .def_readwrite("joiner_filename", &PyClass::joiner_filename)
+      .def("__str__", &PyClass::ToString);
+}
+
+}  // namespace sherpa_onnx