Align Codebase with Google C++ Style and Modern Practices

[hankhsu1996]

This PR refactors the codebase to follow the Google C++ style, which is widely recognized in open-source projects. Customizations have been made to better align with modern C++ practices.

Key Changes

• Google C++ Style: Updated .clang-format to adhere to Google style, with modifications tailored for modern C++ code.

  • Adjustments include:
    • AlignAfterOpenBracket: AlwaysBreak for improved readability in cases like trailing return types and complex function signatures.
    • AllowShortFunctionsOnASingleLine: false to ensure consistency in formatting, especially when dealing with more complex modern C++ features.

• Clang-Tidy Integration: Added a .clang-tidy configuration.

  • Enabled google-*, modernize-*, and additional checks to enforce coding standards and encourage the use of modern C++ best practices.

• Codebase Refactoring: Reformatted all files to comply with the updated styling rules.

  • Note: These changes are purely internal and do not affect the public API.

Impact

• Enhances code consistency and readability.
• Ensures the codebase is up-to-date with modern C++ standards, accommodating features like trailing return types and other contemporary language features.