chore: upgrade LocationWithUnexpectedStopTimeNotice to ERROR

[lionel-nj]

closes #1017
Summary:

This PR provides support to upgrade LocationWithUnexpectedStopTimeNotice to ERROR.

Expected behavior:

LocationWithUnexpectedStopTimeNotice:

Referenced locations must be stops/platforms, i.e. their stops.location_type value must be 0 or empty.
https://github.com/google/transit/blob/master/gtfs/spec/en/reference.md#stop_timestxt

Please make sure these boxes are checked before submitting your pull request - thanks!

• Run the unit tests with gradle test to make sure you didn't break anything
• Format the title like "feat: [new feature short description]". Title must follow the Conventional Commit Specification(https://www.conventionalcommits.org/en/v1.0.0/).
• Linked all relevant issues
• [ ] Include screenshot(s) showing how this pull request works and fixes the issue(s)

[aababilov]

LGTM

[lionel-nj]

Thanks for reviewing @aababilov!