chore: upgrade StopTimeTimepointWithoutTimesNotice to ERROR

[lionel-nj]

closes #1017
More context
Summary:

This PR provides support to upgrade StopTimeTimepointWithoutTimeNotice to ERROR.

Expected behavior:

• StopTimeTimepointWithoutTimeNotice:

Field Name	Type	Presence	Description
trip_id	ID referencing trips.trip_id	Required	Identifies a trip.
arrival_time	Time	Conditionally Required	Arrival time at the stop (defined by stop_times.stop_id) for a specific trip (defined by stop_times.trip_id). If there are not separate times for arrival and departure at a stop, arrival_time and departure_time should be the same. For times occurring after midnight on the service day, enter the time as a value greater than 24:00:00 in HH:MM:SS local time for the day on which the trip schedule begins. If exact arrival and departure times (timepoint=1 or empty) are not available, estimated or interpolated arrival and departure times (timepoint=0) should be provided. Conditionally Required: - Required for the first and last stop in a trip (defined by stop_times.stop_sequence). - Required for timepoint=1. - Optional otherwise.
departure_time	Time	Conditionally Required	Departure time from the stop (defined by stop_times.stop_id) for a specific trip (defined by stop_times.trip_id). If there are not separate times for arrival and departure at a stop, arrival_time and departure_time should be the same. For times occurring after midnight on the service day, enter the time as a value greater than 24:00:00 in HH:MM:SS local time for the day on which the trip schedule begins. If exact arrival and departure times (timepoint=1 or empty) are not available, estimated or interpolated arrival and departure times (timepoint=0) should be or

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)

[lionel-nj]

This notice is emitted by 44 datasets from the MobilityDatabase.

[isabelle-dr]

Could you update docs/MIGRATION_V2_V3.md as well?
Besides, LGTM, thanks!

[asvechnikov2]

A couple of comments, otherwise, LGTM!

[lionel-nj]

Thanks for reviewing @asvechnikov2!

[maximearmstrong]

LGTM!