refactor(repository): replace queryFactory with DbSetFactory in DbRepository

- Updated DbRepository constructor to use DbSetFactory<TDbContext, TEntity>
  instead of a Func<TDbContext, DbSet<TEntity>> queryFactory.
- Adjusted namespace imports to include DigitalData.Core.Infrastructure.Factory.
- Improved repository instantiation consistency and encapsulation.

DigitalData.Core.Tests/Mock/User.cs

@@ -1,7 +1,9 @@
 using DigitalData.Core.Abstraction.Application.Repository;
+using System.ComponentModel.DataAnnotations.Schema;
 
 namespace DigitalData.Core.Tests.Mock;
 
+[Table("USER")]
 public class User : UserBase, IEntity
 {
     public required int Id { get; init; }