Auto merge of #10817 - y21:validate-lint-name, r=flip1995

validate lint name in `clippy_dev`

This PR adds a little bit of validation to `cargo dev new_lint`. I've had it happen a few times where I wanted to add a new lint, but forgot that lint names cannot contain `-`. If you try to do it anyway, `clippy_dev` will generate illegal syntax (like adding `mod test-lint;` to clippy_lints/src/lib.rs for the module declaration). Maybe having it error out early would be helpful to others too.

changelog: none

0 files changed, 0 insertions, 0 deletions