feat(core): Add metrics option to cache (#6846)

* add metrics to cache

* use events for metrics

* pr comments / broken test

* lint fix

* update the test

* improve tests

* Update packages/cli/src/config/schema.ts

* disable flaky test

* lint fix

---------

Co-authored-by: कारतोफ्फेलस्क्रिप्ट™ <aditya@netroy.in>
Co-authored-by: कारतोफ्फेलस्क्रिप्ट™ <netroy@users.noreply.github.com>

packages/cli/src/eventbus/MessageEventBus/MessageEventBus.ts

@@ -11,10 +11,7 @@ import { MessageEventBusLogWriter } from '../MessageEventBusWriter/MessageEventB
 import EventEmitter from 'events';
 import config from '@/config';
 import * as Db from '@/Db';
-import {
-	messageEventBusDestinationFromDb,
-	incrementPrometheusMetric,
-} from '../MessageEventBusDestination/Helpers.ee';
+import { messageEventBusDestinationFromDb } from '../MessageEventBusDestination/MessageEventBusDestinationFromDb';
 import uniqby from 'lodash/uniqBy';
 import type { EventMessageConfirmSource } from '../EventMessageClasses/EventMessageConfirm';
 import type { EventMessageAuditOptions } from '../EventMessageClasses/EventMessageAudit';
@@ -29,6 +26,7 @@ import {
 	eventMessageGenericDestinationTestEvent,
 } from '../EventMessageClasses/EventMessageGeneric';
 import { recoverExecutionDataFromEventLogMessages } from './recoverEvents';
+import { METRICS_EVENT_NAME } from '../MessageEventBusDestination/Helpers.ee';
 
 export type EventMessageReturnMode = 'sent' | 'unsent' | 'all' | 'unfinished';
 
@@ -224,9 +222,7 @@ export class MessageEventBus extends EventEmitter {
 	}
 
 	private async emitMessage(msg: EventMessageTypes) {
-		if (config.getEnv('endpoints.metrics.enable')) {
-			await incrementPrometheusMetric(msg);
-		}
+		this.emit(METRICS_EVENT_NAME, msg);
 
 		// generic emit for external modules to capture events
 		// this is for internal use ONLY and not for use with custom destinations!