[CM] Event Stream: log CRUD events

[vadimkibana]

Once Event Bus emits all necessary fields in its events. We should subscribe to those and log all CM CRUD events into the Event Stream.

• [ ] Log CRUD events (create, read, update, delete) and search.
  • [ ] get
  • [ ] create
  • [ ] update
  • [ ] delete
  • [ ] search
• [ ] Figure out what to do with bulk read events. Log them with the same transaction ID?
  • [ ] Log bulkGet RPC calls
• [ ] Consider ability of unsubscribing from events, using .off(). Or unsubscribing all listeners, when stop() Kibana plugin life-cycle is run. (See https://github.com/elastic/kibana/pull/153211#discussion_r1151601804).

[elasticmachine]

Pinging @elastic/appex-sharedux (Team:SharedUX)

[elasticmachine]

Pinging @elastic/kibana-visualizations @elastic/kibana-visualizations-external (Team:Visualizations)