Add license to tooling/lints crate (#60468)

Seeing `script/check-license` fail because we forgot to add a license in
#58496

> Error: tooling/lints does not contain a LICENSE-GPL or LICENSE-APACHE
symlink

Release Notes:

- N/A
eeff97950fBennet Bo Fenner committed on 7/6/2026, 4:10:48 PM· committed by GitHubparent283d505
3 files changedLine totals unavailable