[Chapel Merge] Add line numbers to lookForTrailingSpaces output

Branch: refs/heads/main
Revision: 4dc5a98
Author: aconsroe-hpe
Link: Unavailable
Log Message:

Merge pull request #19208 from aconsroe-hpe/whitespace-more

Add line numbers to lookForTrailingSpaces output

reviewed by @lydia-duncan

PR #19169 enabled lint checking on trailing whitespace, but didn't
provide line numbers. This adds line numbers to the output

Modified Files:
M util/devel/lookForTrailingSpaces

Compare: https://github.com/chapel-lang/chapel/compare/b22c24a27230...4dc5a98d3399