feat: Introduce Deprecation tracking

[julienbourdeau]

Context

Some feature get deprecated or changed right after their released. For example, sending events without the external_subscription_id has been deprecated for a while and soon, we will stop accepting these events.

Description

In this PR, I'm adding a way to track the organization that still send events without external_subscription_id.

To get the report, we'd connect to the prod console, run the following snippet and paste it in a spreadsheet.

If necessary, we can improve this to upload CSV files regularly and such. I'd rather keep it simple for now.

Loading development environment (Rails 7.0.8.1)
irb(main):001:0> Deprecation.report(:dead_feature, "4761f46f-ab38-45bc-bae1-bcfdcbac5fbf")
=> 1
irb(main):002:0> Deprecation.report(:dead_feature, "4761f46f-ab38-45bc-bae1-bcfdcbac5fbf")
=> 2
irb(main):003:0> Deprecation.report(:dead_feature, "4761f46f-ab38-45bc-bae1-bcfdcbac5fbf")
=> 3
irb(main):005:0> puts Deprecation.get_all_as_csv(:dead_feature)
  Organization Pluck (0.3ms)  SELECT "organizations"."id" FROM "organizations"
organization_id,last_seen_at,count
4761f46f-ab38-45bc-bae1-bcfdcbac5fbf,2024-05-22 15:20:01 UTC,3
=> nil
irb(main):007:0> Deprecation.get_all(:dead_feature)
  Organization Pluck (3.1ms)  SELECT "organizations"."id" FROM "organizations"
=> [{:organization_id=>"4761f46f-ab38-45bc-bae1-bcfdcbac5fbf", :last_seen_at=>"2024-05-22T15:20:01.794Z", :count=>3}]