Refactor viewmodels to use new namespace structure

Marechai/Services/InstructionSetExtensionsByProcessorService.cs

@@ -26,8 +26,8 @@
 using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
+using Marechai.Data.Dtos;
 using Marechai.Database.Models;
-using Marechai.ViewModels;
 using Microsoft.EntityFrameworkCore;
 
 namespace Marechai.Services;