Reformatting the source code with clang-format

I recently opened a pull request at to reformat the entire Zeek code base using clang-format. Clang-format 12.0.1 (and 13) recently gained more support for the Whitesmiths formatting style that Zeek uses. Reformatting against some sort of standard has been on the Zeek roadmap for a while. This email is to notify everyone that we’re going to merge this PR in the next week or so. It shouldn’t cause any breakage to plugins built out-of-tree, but will likely cause breakage for people that have forks of Zeek or are working on long-lived branches. If there’s any concerns with us merging this, please comment on the PR so we can resolve those concerns. Thanks!