DevOps Adoption MVC (backend)

This is the data collection backend implementation issue for #247112 (closed)

Proposal

We already have models for storing segments and the boolean flags (collected data), however the data collection part is missing.

1. Create a service class that collects the boolean flags (and stores it in the Snapshot model) for a time period (30) day for a given Segment.

• Snapshot model definition with the boolean flags: !47388 (diffs)
• The service should use group level finders to collect info about the following data points: #247112 (comment 425512083)
• Example calculation for merge requests opened:

  merge_request_opened = MergeRequestsFinder.new(group: Segment.groups).execute.last.created_at < 30.days.ago

2. Define a cron job (monthly) which runs the service and persists the data (in a snapshot)