This largely copies over Spicy's `.clang-format` configuration file. The
one place where we deviate is header include order since Zeek depends on
headers being included in a certain order.
* origin/topic/neverlord/version-header:
testing/zeek-version-link: Assume nm is there
Drop dependency for zeek_dynamic_plugin_base
Fixup ifdef check in Plugin.h
Update cmake_minimum_required() in test plugins
testing: Add zeek-version-link tests
Clean up ZEEK_CONFIG_SKIP_VERSION_H issues
cmake-format during merge
This goes the hard-exit on conflicts route as IMO it provides better
messaging that something is wrong, rather than defaulting to something
the user may not expect.
Fixes#2403
