Use e.g. clang format for auto formatting

[ronag]

Similar to prettier.

[anonrig]

I'm +1 on this.

[miguelteixeiraa]

What do you think about adding this as a pre-commit hook?
I just did a PR to https://github.com/ada-url/idna proposing it.
The PR is kinda duty because of the clang-format file changes but you can take a look at how is it here https://github.com/miguelteixeiraa/idna/tree/clang-format-contrib

[miguelteixeiraa]

Also which style base are we going to use? (in that PR I used the Google style base) There is also a clang-format style detector (based on the written code) but since it is a windows-based software I'm not able to try it now.