6071 return only updated fields of records in zapier update trigger (#8193)

- move webhook triggers into `entity-events-to-db.listener.ts`
- refactor event management
- add a `@OnDatabaseEvent` decorator to manage database events
- add updatedFields in updated events
- update openApi webhooks docs
- update zapier integration

packages/twenty-server/src/engine/api/graphql/graphql-query-runner/utils/check-string-is-database-event-action.ts

@@ -0,0 +1,9 @@
+import { DatabaseEventAction } from 'src/engine/api/graphql/graphql-query-runner/enums/database-event-action';
+
+export const checkStringIsDatabaseEventAction = (
+  value: string,
+): value is DatabaseEventAction => {
+  return Object.values(DatabaseEventAction).includes(
+    value as DatabaseEventAction,
+  );
+};