feat: add debug events API (#8533)

# Which Problems Are Solved

Add a debug API which allows pushing a set of events to be reduced in a
dedicated projection.
The events can carry a sleep duration which simulates a slow query
during projection handling.

# How the Problems Are Solved

- `CreateDebugEvents` allows pushing multiple events which simulate the
lifecycle of a resource. Each event has a `projectionSleep` field, which
issues a `pg_sleep()` statement query in the projection handler :
  - Add
  - Change
  - Remove
- `ListDebugEventsStates` list the current state of the projection,
optionally with a Trigger
- `GetDebugEventsStateByID` get the current state of the aggregate ID in
the projection, optionally with a Trigger


# Additional Changes

- none

# Additional Context

-  Allows reproduction of https://github.com/zitadel/zitadel/issues/8517

cmd/defaults.yaml

@@ -1033,6 +1033,8 @@ InternalAuthZ:
         - "iam.web_key.write"
         - "iam.web_key.delete"
         - "iam.web_key.read"
+        - "iam.debug.write"
+        - "iam.debug.read"
         - "org.read"
         - "org.global.read"
         - "org.create"
@@ -1110,6 +1112,7 @@ InternalAuthZ:
         - "iam.restrictions.read"
         - "iam.feature.read"
         - "iam.web_key.read"
+        - "iam.debug.read"
         - "org.read"
         - "org.member.read"
         - "org.idp.read"