fix: generate errors when missing lat/long for stops, stations, entrances

[briandonahue]

Summary:

Generate error notice when Latitude and/or Longitude is not supplied for stops (location_type=0), stations (location_type=1) or entrances/exits (location_type=2).

Addresses #1180

Expected behavior:

Should throw an error when missing geocoordinate data for stops, stations, entrances/exits

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
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[briandonahue]

@bdferris-v2 I believe all your suggestions are now implemented, thanks for reviewing!

[bdferris-v2]

LGTM

[bdferris-v2]

@briandonahue one other issue: I think the code formatting check is failing on your PR. Can you run the Gradle goJF command on your code to format it properly and update the PR? Thanks!

[isabelle-dr]

@briandonahue and @bdferris-v2 sorry to arrive late on this PR, the documentation is missing for this new notice.
I know we are discussing generating RULES.md automatically, but in the meantime, we need it 😊.
The HTML report links directly to RULES.md to tell users what the notice is, and how to fix it.

Also, I acknowledge that a review by a core developer is enough to unblock the merge (thank you @bdferris-v2), but please wait for a MobilityData staff to review as well before merging. I know our capacity doesn't allow us to review right away, but we need to acknowledge what has been merged on this project so that we can:

• close the issue if needed, open follow-up issues
• coordinate with other contributors (for example, PR Add a list of validators that meet the official GTFS requirements #1315 contains the same fix)
• make sure dependencies (like the docs) have been updated
• answer questions
  Many thanks 🙏