Fast configuration options to speed up incident recovery, e.g. by token send to overflow or drop

[tiina303]

why: To help reduce time to incident resolution

Way to roll out configuration changes to ingestion pipeline without a PR and deploy or touching k8s

• [ ] Capture: drop by token, drop by event, drop by distinct_id
• [ ] Plugin-server
  • drop by token, drop by event, drop by distinct_id (shared with capture, single config)
  • send to overflow by token, event, distinct_id

Q2 planning doc: https://docs.google.com/document/d/1pC9P5dRSh7NP3ActXcAe1YaN4Y0nUyEeJI3noM1KpFw/edit