removed devexpress and refactoring

UserService.DatabaseLayer/Repository/BaseRepository.cs

@@ -1,6 +1,8 @@
 using System;
 using System.Collections.Generic;
 using System.Linq.Expressions;
+using System.Runtime.CompilerServices;
+using System.Security.Cryptography.X509Certificates;
 using System.Threading;
 using System.Threading.Tasks;
 using Microsoft.EntityFrameworkCore;
@@ -8,7 +10,7 @@ using UserService.DatabaseLayer.DataModels;
 
 namespace UserService.DatabaseLayer.Repository
 {
-    public class BaseRepository<T> where T : class
+    public class BaseRepository<T> where T : Node
     {
         private readonly Func<UserServiceDbContext, DbSet<T>> _context;
 
@@ -20,7 +22,7 @@ namespace UserService.DatabaseLayer.Repository
         public async Task<IReadOnlyList<T>> GetAllAsync(CancellationToken token = default)
         {
             await using var db = new UserServiceDbContext();
-            return await _context(db).ToListAsync(token);
+            return await _context(db).Include(x => x.Parent).ToListAsync(token);
         }
 
         public async Task<T?> GetAsync(Expression<Func<T, bool>> predicate, CancellationToken token = default)