In the case that we are reading binary files in repositories, we should
not log a WARN that there are "hidden" characters in it, as it's a
binary file.
We can use a common heuristic (at least according to Claude Sonnet 4.5)
to look for null bytes at the beginning of our files, and not log the
warning in that case.
Co-authored-by: Claude Sonnet 4.5 <jamie.tanna+github-copilot@mend.io>
Jamie Tanna