implement JSON schema generation and validation

[Dakad]

REF: brooklynDev#90

What does this PR do?

Generate JSON schema from each REST call I make, storing it in git, then verifying future rest calls verify against that schema. This is a quick way to detect changes in the API. I've only tested it against my test suite, so there might be more gotchas that this doesn't account for. Updates or feedback on an improved approach would be appreciated.

Associated ticket number and/or AirBrake error?

Due Date or Desirable Merge

How has this been tested?

Anticipated impact

How do you plan to monitor the change in prod to make sure it's working?

Checklist

• My code follows the code style of this project.
• I have run tests locally (manual tests and otherwise).
• This has been tested on staging.
• My change requires a change to the documentation.
  • I have updated the documentation accordingly.
• My change includes a database modification
  • I have tested my database modification in staging.
• My change breaks API retrocompatibility.
  • I have notified the frontend developers concerned about this change.
  • I have notified the public API consumers about this change. (DataPi)
• My change affects endpoints for console or search-ads integrations. If so:
  • I am tagging a reviewer to explicitly review the security of this change: (flag reviewer here)
• My changes require changes in other components/squads/teams
  • I already did the changes in the other components or notified the responsible people that the changes need to be done
  • The needed changes are already deployed or ready to be deployed