Seal of reliability: Implement logic and Official criterion

[jcpitre]

Implement the logic described in #1761 (comment) and use the official criterion for the initial development.

[Alessandro100]

Tasks

• write the logic of official criteria following the architecture in the comment here

Deliverable

• The ability to do a curl to test this
• Have a dry run option
• The feed after running this function should have it's seal data updated

[ianktc]

Pending discussions on 6 month window criterion:

• continuity for 6 months
• no validation errors for 6 months