Refactor the code (#15)

* code refactoring

* Remove reference files

* Update README and CI

* small fixes

* fix style issues

* add style check for CI

* fix style issues

* remove kaldi-native-io

.github/workflows/style_check.yaml

@@ -0,0 +1,58 @@
+# Copyright (c)  2022  Xiaomi Corporation (authors: Fangjun Kuang)
+#
+# See ../../LICENSE for clarification regarding multiple authors
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: style_check
+
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - '.github/workflows/style_check.yaml'
+      - 'sherpa-onnx/**'
+  pull_request:
+    branches:
+      - master
+    paths:
+      - '.github/workflows/style_check.yaml'
+      - 'sherpa-onnx/**'
+
+concurrency:
+  group: style_check-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  style_check:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        python-version: [3.8]
+      fail-fast: false
+
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+
+      - name: Setup Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v1
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Check style with cpplint
+        shell: bash
+        working-directory: ${{github.workspace}}
+        run: ./scripts/check_style_cpplint.sh