Lix has a style guide: https://wiki.lix.systems/books/lix-contributors/page/code but contributors like me have been unable to enforce it, which is sad. To avoid further violations of that style guide, we enable a pre-commit hook for clang formatting of the changed lines. Change-Id: I217452efa3ac8bd66b4d3a08a6fe9a241207790b Signed-off-by: Raito Bezarius <raito@lix.systems>