add linter ci

[baltzell]

No description provided.

[c-dilks]

I tested this in #62, #63, and #64, and in all three cases, the linter catches the issue, but the CI job passes.

Perhaps you'd be better off with for loops here, which (1) print the name of the file, then (2) runs the lint job with proper exit codes

[c-dilks]

Feel free to push commits to those test PRs, and close them when done

[baltzell]

done, all 3 failed after the fix