[Python] Code Formatter for Python Templates

[vanshaj-bhatia]

Add support for a Python code formatter. That enable automatic formatting of Python code files to adhere to a consistent style, similar to what spotless does for Java templates. Consider integrating popular Python code formatters like Black or autopep8, based on the features and usability, the bin/start.sh (similar to Maven spotless:apply). This enhancement will ensure clean and standardized code across the repository.