Re: Add a tentative .clang-format for LilyPond. (issue 561340043 by hanwenn@gmail.com)

[lemzwerg--- via Discussions on LilyPond development]

> If Werner likes it, I'm fine with it.

I do like it, and it is completely non-intrusive since it gets used
locally only for those people who set up a proper git hook (or call
`clang-format` manually).

https://codereview.appspot.com/561340043/