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

e2e/cypress/support/types.ts

@@ -1,10 +1,13 @@
 let webhookEventSchema = {
-  unit: 0,
-  id: '',
-  callURL: '',
-  periodStart: new Date(),
-  threshold: 0,
-  usage: 0,
+  sentStatus: 0,
+  payload: {
+    unit: 0,
+    id: '',
+    callURL: '',
+    periodStart: new Date(),
+    threshold: 0,
+    usage: 0,
+  },
 };
 
 export type ZITADELWebhookEvent = typeof webhookEventSchema;