Add clang-format file

[netmindz]

Rather than just describing what code style we look for, it would be good to provide a clang-format file

To get us started I have created one based on a style detection tool and one of the current files

In order to verify if the file is right, we can run clang-format -i wled00/*.cpp and if we have the right values then all the changes should match our expectations

We might not choose to mass reformat all existing code, but it serves as useful test to check that new code being written will indeed conform to our style

I very much welcome input from others, especially those with knowledge of how to write a clang-format file

Summary by CodeRabbit

• Chores
  • Added a new code formatting configuration to standardize code style across the project.
  • Updated file ignore settings to allow the new formatting configuration file to be tracked.

[w00000dy]

I think that's a very good idea. The question is, do we want a .clang-format file that is as close as possible to the current WLED code, or do we want a .clang-format file that also fixes some of the unattractive things in the WLED code?

[netmindz]

That's where I've stumbled a bit to be honest @w00000dy If you use on of the automated tools to help build a clang file against current code then you get slightly different rules depending on which file you use as your reference

[netmindz]

Thank you @w00000dy for your comments, this is my first time using clang and I'm not a C++ developer I am very grateful for input from those with experience.

I'll have a look through your individual comments when I get time to do so

[github-actions[bot]]

Hey! This pull request has been open for quite some time without any new comments now. It will be closed automatically in a week if no further activity occurs. Thank you for contributing to WLED! ❤️

[coderabbitai[bot]]

Walkthrough

A new .clang-format file was added to define code formatting rules, and the .gitignore file was updated to stop ignoring .clang-format. No changes were made to any code or exported entities.

Changes

Files	Change Summary
.clang-format	Added a code formatting configuration file with custom rules based on Google style.
.gitignore	Removed .clang-format from ignored files, allowing it to be tracked in version control.

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[w00000dy]

Please don't close this PR. I would like the idea of this PR