Adiciona primeira parte de adicao de roles

src/app.module.ts

@@ -1,6 +1,6 @@
 import { Module, MiddlewareConsumer } from '@nestjs/common';
 import { ConfigModule } from '@nestjs/config';
-
+import { APP_GUARD } from '@nestjs/core';
 import { PrismaModule } from './prisma/prisma.module';
 import { AppController } from './app.controller';
 import { AppService } from './app.service';
@@ -9,6 +9,7 @@ import { AuthModule } from './auth/auth.module';
 import { VideosController } from './videos/videos.controller';
 import { UsuariosModule } from './usuarios/usuarios.module';
 import { LoggerMiddleware } from './middleware/logger.middleware';
+import { RolesGuard } from './auth/roles.guard';
 
 @Module({
   imports: [
@@ -19,7 +20,7 @@ import { LoggerMiddleware } from './middleware/logger.middleware';
     UsuariosModule,
   ],
   controllers: [AppController],
-  providers: [AppService],
+  providers: [AppService, { provide: APP_GUARD, useClass: RolesGuard }],
 })
 export class AppModule {
   configure(consumer: MiddlewareConsumer) {