feat: push telemetry (#6027)

* document analytics config

* rework configuration and docs

* describe HandleActiveInstances better

* describe active instances on quotas better

* only projected events are considered

* cleanup

* describe changes at runtime

* push milestones

* stop tracking events

* calculate and push 4 in 6 milestones

* reduce milestone pushed

* remove docs

* fix scheduled pseudo event projection

* push 5 in 6 milestones

* push 6 in 6 milestones

* ignore client ids

* fix text array contains

* push human readable milestone type

* statement unit tests

* improve dev and db performance

* organize imports

* cleanup

* organize imports

* test projection

* check rows.Err()

* test search query

* pass linting

* review

* test 4 milestones

* simplify milestone by instance ids query

* use type NamespacedCondition

* cleanup

* lint

* lint

* dont overwrite original error

* no opt-in in examples

* cleanup

* prerelease

* enable request headers

* make limit configurable

* review fixes

* only requeue special handlers secondly

* include integration tests

* Revert "include integration tests"

This reverts commit 96db9504ec.

* pass reducers

* test handlers

* fix unit test

* feat: increment version

* lint

* remove prerelease

* fix integration tests

internal/notification/projections.go

@@ -29,6 +29,8 @@ func Start(
 	ctx context.Context,
 	userHandlerCustomConfig projection.CustomConfig,
 	quotaHandlerCustomConfig projection.CustomConfig,
+	telemetryHandlerCustomConfig projection.CustomConfig,
+	telemetryCfg handlers.TelemetryPusherConfig,
 	externalPort uint16,
 	externalSecure bool,
 	commands *command.Commands,
@@ -74,4 +76,15 @@ func Start(
 		metricSuccessfulDeliveriesJSON,
 		metricFailedDeliveriesJSON,
 	).Start()
+	if telemetryCfg.Enabled {
+		handlers.NewTelemetryPusher(
+			ctx,
+			telemetryCfg,
+			projection.ApplyCustomConfig(telemetryHandlerCustomConfig),
+			commands,
+			q,
+			metricSuccessfulDeliveriesJSON,
+			metricFailedDeliveriesJSON,
+		).Start()
+	}
 }