feat(realtime): add ConfigModule and UsersModule to RealtimeModule

- Integrated `ConfigModule` for configuration management.
- Added `UsersModule` to enable forward-ref dependencies in realtime services.

backend/src/realtime/realtime.module.ts

@@ -1,9 +1,11 @@
-import { Module } from "@nestjs/common";
+import { forwardRef, Module } from "@nestjs/common";
+import { ConfigModule } from "@nestjs/config";
 import { CryptoModule } from "../crypto/crypto.module";
+import { UsersModule } from "../users/users.module";
 import { EventsGateway } from "./events.gateway";
 
 @Module({
-	imports: [CryptoModule],
+	imports: [CryptoModule, ConfigModule, forwardRef(() => UsersModule)],
 	providers: [EventsGateway],
 	exports: [EventsGateway],
 })