feat(clang-format): use existing `_clang-format` config if present
Currently the CI job only checks for the presence of a .clang-format config file, but not for the alternative _clang-format file.
Related: graphics/okular!862 (closed)
Currently the CI job only checks for the presence of a .clang-format config file, but not for the alternative _clang-format file.
Related: graphics/okular!862 (closed)