feat: Implement real-time messaging module with REST API endpoints and WebSocket gateway.

src/messages/messages.module.ts

@@ -0,0 +1,28 @@
+import { Module } from '@nestjs/common';
+import { JwtModule } from '@nestjs/jwt';
+import { ConfigModule, ConfigService } from '@nestjs/config';
+import { MessagesController } from './messages.controller';
+import { MessagesService } from './messages.service';
+import { MessagesGateway } from './messages.gateway';
+import { PrismaModule } from '../prisma/prisma.module';
+
+@Module({
+  imports: [
+    PrismaModule,
+    ConfigModule,
+    JwtModule.registerAsync({
+      imports: [ConfigModule],
+      inject: [ConfigService],
+      useFactory: (configService: ConfigService) => ({
+        secret: configService.get<string>('JWT_SECRET') || 'fallback-secret',
+        signOptions: {
+          expiresIn: '15m',
+        },
+      }),
+    }),
+  ],
+  controllers: [MessagesController],
+  providers: [MessagesService, MessagesGateway],
+  exports: [MessagesService, MessagesGateway],
+})
+export class MessagesModule {}