chore(events): apply post-merge comments

Introduces a new interface `RequestDetails` to abstract `Request`
providing access to request body and headers.

**BREAKING:** Replace `request: Request` with `request: RequestDetails` at `RequestValidator`.

**BREAKING:** Remove required field `router` at `HttpPostIngressEventPublisher.fromConfig`
  and replace it with `bind(router: Router)`.
  Additionally, the path prefix `/http` will be added inside `HttpPostIngressEventPublisher`.

Relates-to: PR #13931
Signed-off-by: Patrick Jungermann <Patrick.Jungermann@gmail.com>

packages/backend/src/plugins/events.ts

@@ -27,14 +27,12 @@ export default async function createPlugin(
   subscribers: EventSubscriber[],
 ): Promise<Router> {
   const eventsRouter = Router();
-  const httpRouter = Router();
-  eventsRouter.use('/http', httpRouter);
 
   const http = HttpPostIngressEventPublisher.fromConfig({
     config: env.config,
     logger: env.logger,
-    router: httpRouter,
   });
+  http.bind(eventsRouter);
 
   await new EventsBackend(env.logger)
     .addPublishers(http)