Long lists of items in source code or config can be hard to work with as
a human, most problematic being out-of-order entries in an otherwise
ordered list. This is where keep-sorted comes to the rescue: we can
leave two little comments on every listing we care about, and
keep-sorted ensures that the listing stays in order.
This commit also applied keep-sorted to the CODEOWNERS file, hopefully
demonstrating its usefulness to some extent. I'd expect more uses for
keep-sorted to be discovered organically over time.
keep-sorted is super fast, so it should not be a problem to add it to
the //:tidy target, even if we scan all files in the code base. On my
MacBook:
$ time (find . -not -path "./.git/*" -type f | sort | xargs "${keep_sorted}" --mode fix)
real 0m0.249s
user 0m0.124s
sys 0m0.129s
