feat(websockets): add websockets service

packages/websockets/src/Domain/Handler/WebSocketMessageRequestedEventHandler.ts

@@ -0,0 +1,14 @@
+import { DomainEventHandlerInterface, WebSocketMessageRequestedEvent } from '@standardnotes/domain-events'
+import { inject, injectable } from 'inversify'
+
+import TYPES from '../../Bootstrap/Types'
+import { ClientMessengerInterface } from '../../Client/ClientMessengerInterface'
+
+@injectable()
+export class WebSocketMessageRequestedEventHandler implements DomainEventHandlerInterface {
+  constructor(@inject(TYPES.WebSocketsClientMessenger) private webSocketsClientMessenger: ClientMessengerInterface) {}
+
+  async handle(event: WebSocketMessageRequestedEvent): Promise<void> {
+    await this.webSocketsClientMessenger.send(event.payload.userUuid, event.payload.message)
+  }
+}