Add paginated user retrieval functionality in AdminController and related services. Implemented UsersFilter for filtering user queries and added LastConnectionDate property to User model. Updated database schema and frontend API to support new user management features.

src/Managing.Application.Abstractions/Services/IUserService.cs

@@ -1,4 +1,6 @@
-using Managing.Domain.Users;
+using Managing.Application.Abstractions.Shared;
+using Managing.Domain.Users;
+using static Managing.Common.Enums;
 
 namespace Managing.Application.Abstractions.Services;
 
@@ -13,4 +15,5 @@ public interface IUserService
     Task<User> GetUserByAgentName(string agentName);
     Task<User> GetUserByIdAsync(int userId);
     Task<IEnumerable<User>> GetAllUsersAsync();
+    Task<(IEnumerable<User> Users, int TotalCount)> GetUsersPaginatedAsync(int page, int pageSize, UserSortableColumn sortBy, string sortOrder, UsersFilter filter);
 }