Apply code formatting to C and C++ files

[azriel1rf]

This pull request applies consistent code formatting to the C and C++ source files to improve readability and maintainability. The changes were made using clang-format with the LLVM style, along with some additional manual formatting.

Key changes include:

• Format code using clang-format with LLVM style (Changed to Google style with discussion Apply code formatting to C and C++ files #97 (review))
• Delete trailing whitespace
• Fix mixed line endings to use consistent LF (Unix-style) line endings
• Ensure all files end with a newline
• Fix minor formatting issues like inconsistent spacing and indentation

Applying a standard format makes the code easier to read and maintain. It also ensures compatibility with future formatting and linting standards that will be enforced using pre-commit hooks and GitHub Actions in this repository. (#95)

If you have any preferences for the clang-format configuration, please share your .clang-format file and I'll be happy to update the formatting to match.

This is a non-functional change and all tests should continue to pass with the formatting applied. Please let me know if you have any questions or feedback!

[HenryRLee]

Is there any chance to use Google coding style? Maybe try BasedOnStyle: Google?

I am not very comfortable with this LLVM style, especially the right reference alignment.

If this is not easy to fix, alternatively, there might be an option to override ReferenceAlignment.

Sorry for this big ask. I understand you've done a hard work tidying the format.

[azriel1rf]

Thanks for reviewing and providing feedback on the code formatting! I appreciate your preference for the specific coding style and have updated the formatting accordingly.
Thank you for your time and consideration!

[HenryRLee]

Looks great! Thanks a lot!