feat: call webhooks at least once (#5454)

* feat: call webhooks at least once

* self review

* feat: improve notification observability

* feat: add notification tracing

* test(e2e): test at-least-once webhook delivery

* fix webhook notifications

* dedicated quota notifications handler

* fix linting

* fix e2e test

* wait less in e2e test

* fix: don't ignore failed events in handlers

* fix: don't ignore failed events in handlers

* faster requeues

* question

* fix retries

* fix retries

* retry

* don't instance ids query

* revert handler_projection

* statements can be nil

* cleanup

* make unit tests pass

* add comments

* add comments

* lint

* spool only active instances

* feat(config): handle inactive instances

* customizable HandleInactiveInstances

* call inactive instances quota webhooks

* test: handling with and w/o inactive instances

* omit retrying noop statements

* docs: describe projection options

* enable global handling of inactive instances

* self review

* requeue quota notifications every 5m

* remove caos_errors reference

* fix comment styles

* make handlers package flat

* fix linting

* fix repeating quota notifications

* test with more usage

* debug log channel init failures

internal/logstore/quotaqueriers/mock/noop.go

@@ -23,6 +23,6 @@ func (i *inmemReporter) GetCurrentQuotaPeriod(context.Context, string, quota.Uni
 	return i.config, i.startPeriod, nil
 }
 
-func (*inmemReporter) GetDueQuotaNotifications(context.Context, *quota.AddedEvent, time.Time, uint64) ([]*quota.NotifiedEvent, error) {
+func (*inmemReporter) GetDueQuotaNotifications(context.Context, *quota.AddedEvent, time.Time, uint64) ([]*quota.NotificationDueEvent, error) {
 	return nil, nil
 }