docs: add code style guide in English, Japanese, and Chinese

docs/en/plugin/dev/style.md

@@ -0,0 +1,15 @@
+# Code Style Guide
+
+## Logging
+
+In plugins, please use the `logging` module to record logs, do not use `print` statements (this will cause logs to not be output in the container environment).
+
+```python
+import logging
+
+logger = logging.getLogger(__name__)  # Import logging module at the beginning of any Python file and define logger object
+
+logger.info('This is an info message')  # Use logger.info to record info level logs
+logger.warning('This is a warning message')
+logger.error('This is an error message')
+```