Ban keywords from crate names

Ban keywords from crate names

Dearest Reviewer,

This pull request extends the banned list of project names to include
all of the current keywords for rust. I got the list of keywords from
https://doc.rust-lang.org/grammar.html#keywords . This
closes #2699 . The original ticket said warn but I figured how test is
handled is most likely how all banned names should be handled.

Oddly enough a few keywords have made their way to the crates.io. fn and
proc are both examples I found spot checking keywords. I do not there is
any action to take on those crates.

Thanks
Becker