[lint] use pre-commit to auto check and lint (#2195)

.pre-commit-config.yaml

@@ -0,0 +1,18 @@
+repos:
+  - repo: https://github.com/pre-commit/pre-commit-hooks
+    rev: v4.5.0
+    hooks:
+    - id: trailing-whitespace
+  - repo: https://github.com/pycqa/flake8
+    rev: '3.8.2'
+    hooks:
+    - id: flake8
+  - repo: https://github.com/pre-commit/mirrors-yapf
+    rev: 'v0.32.0'
+    hooks:
+    - id: yapf
+  - repo: https://gitlab.com/daverona/pre-commit/cpp
+    rev: '0.8.0'
+    hooks:
+    - id: cpplint
+    - id: clang-format

README.md

@@ -59,6 +59,7 @@ git clone https://github.com/wenet-e2e/wenet.git
 conda create -n wenet python=3.8
 conda activate wenet
 pip install -r requirements.txt
+pre-commit install  # for clean and tidy code
 ```
 
 **Build for deployment**

requirements.txt

@@ -19,3 +19,4 @@ tqdm
 deepspeed
 librosa
 openai-whisper
+pre-commit==3.5.0