Validate functionality #18
Description
Maybe it is possible to add a validate command that will run a number of sanity checks against a CODEOWNERS file. At least one situation that I came across earlier this week is duplicate ownerships using the same rule:
/build/logs/ @doctocat
# ...
/build/logs/ docs@example.com
A more extensive check would be to iterate over all files and see if multiple rules apply. This might be a very CPU and IO intensive operation.