Move YAPF style setting to a project-wide .style.yapf file

[mhucka]

Scripts and workflows that run yapf currently each add the option --style=google to the invocation of yapf. To follow best practices, this PR adds a .style.yapf configuration file at the top level of the project to set the style, and removes the flag from where it was added on the command line explicitly.

The use of a config file has the following benefits:

• It lets tools like IDEs discover the setting automatically.
• It reduces the chances that developers will forget to add the flag when they run yapf directly on the command line for quick checks, or write new scripts that use yapf.
• It communicates intentions more clearly to new contributors.

Removing the flag from the scripts is not strictly necessary (everything will work the same if there is both a config file and the flag is passed to yapf). However, if a config file is used, it's better for maintainability and consistency to also remove the flag from individual invocations.

Note: the CI will fail the lint check until PR #1047 is merged.

[gemini-code-assist]

Code Review

This pull request adds a .style.yapf configuration file to set the Python formatting style to Google. The review feedback suggests updating existing formatting scripts to remove hardcoded style flags, ensuring this new file serves as the single source of truth, and recommends adding a .clang-format file for C++ consistency.

[mhucka]

/gemini review

[gemini-code-assist]

Code Review

This pull request centralizes the YAPF configuration by introducing a .style.yapf file and removing redundant style flags from the formatting scripts. Feedback suggests invoking yapf via python3 -m in format_check.sh for better environment consistency and providing the filename parameter to the YAPF API in format_ipynb.py to ensure the new configuration file is properly detected.

[mhucka]

/gemini review

[gemini-code-assist]

Code Review

This pull request centralizes the YAPF formatting configuration by adding a .style.yapf file and removing redundant --style=google flags from various scripts. It also extends formatting coverage to the scripts directory and standardizes the yapf invocation method. A review comment suggests optimizing format_all.sh by combining multiple yapf calls into a single execution to reduce overhead.