added guard jwt

src/costo/costo.controller.ts

@@ -1,10 +1,12 @@
-import { Controller, Get, Post, Body, Patch, Param, Delete } from '@nestjs/common';
+import { Controller, Get, Post, Body, Patch, Param, Delete, UseGuards } from '@nestjs/common';
 import { CostoService } from './costo.service';
+import { JwtAuthGuard } from 'src/user/jwt.guard';
 
 @Controller('costo')
 export class CostoController {
   constructor(private readonly costoService: CostoService) {}
 
+  @UseGuards(JwtAuthGuard)
   @Get()
   findAll() {
     return this.costoService.findAll();