Separate optional from required services

[dmmiller]

There are a number of services that Cord uses as part of its operation. Some of these are necessary (Redis, Postgres, others), and some could be made optional. This is a task to enumerate said things and capture.

[dmmiller]

First pass at some idea of this :

Necessary
  S3
  Redis
  Postgres

Optional
  LaunchDarkly [uses defaults]
  Sendgrid
  Task Management
    JIRA
    Asana
    Monday
    Trello
    Linear
  Cloudwatch
  Sentry
  OpenAI docs search
  IPStack optional
  Google Analytics

Only used by console so not strictly necessary
  Auth0
  Stripe
  Loops

Slack is interesting because it has multiple uses
  integration
  auth in admin
  posting backend data to us