Add support for clang-format

MakisH commented 2 years ago

We need some automatic formatting to maintain the history clean and understandable.

This adds the following:

A script tools/format-code.sh, which only formats the C and C++ files in adapter/. I am ignoring the CalculiX files, as I guess @KyleDavisSA needs to do some diff between CalculiX and the adapter whenever porting to new versions. I could still only enforce indentation, or go the full way and also format the CalculiX files.
The same clang-format config as in preCICE. I guess some familiarity with the style helps.
A GitHub Actions workflow to check the formatting (only of the files in adapter/).

Closes #69.

Note that merging this could cause some merge conflicts in already open merge requests.

KyleDavisSA commented 2 years ago

Do you think it would be better to merge this first, and fix any other merge issues it might cause, or wait until the others are merged?

MakisH commented 2 years ago

Do you think it would be better to merge this first, and fix any other merge issues it might cause, or wait until the others are merged?

This is really easy to reapply, so I would wait for #73 first.

MakisH commented 2 years ago

I would actually wait until we merge the v2.17 to develop first.

MakisH commented 2 years ago

Closing in favor of #83.

precice / calculix-adapter