Add ApiExplorerSettings to DTOs and update controllers

This commit introduces the `[ApiExplorerSettings(IgnoreApi = true)]` attribute to various DTO classes to exclude them from API documentation. The `using Microsoft.AspNetCore.Mvc;` directive has been added to several files to support ASP.NET Core MVC features.

Additionally, comments in `HistoryController.cs` have been reformatted for clarity, and `LocalizationController.cs` has been updated with standard API controller attributes. These changes improve code organization and maintain cleaner API documentation.

EnvelopeGenerator.Application/DTOs/Receiver/ReceiverCreateDto.cs

@@ -1,9 +1,11 @@
-using System.ComponentModel.DataAnnotations;
+using Microsoft.AspNetCore.Mvc;
+using System.ComponentModel.DataAnnotations;
 using System.Security.Cryptography;
 using System.Text;
 
 namespace EnvelopeGenerator.Application.DTOs.Receiver
 {
+    [ApiExplorerSettings(IgnoreApi = true)]
     public record ReceiverCreateDto([EmailAddress] string EmailAddress, string? TotpSecretkey = null)
     {
         public string Signature => sha256HexOfMail.Value;

EnvelopeGenerator.Application/DTOs/Receiver/ReceiverReadDto.cs

@@ -2,10 +2,12 @@
 using DigitalData.Core.DTO;
 using DigitalData.EmailProfilerDispatcher.Abstraction.Attributes;
 using EnvelopeGenerator.Application.DTOs.EnvelopeReceiver;
+using Microsoft.AspNetCore.Mvc;
 using System.Text.Json.Serialization;
 
 namespace EnvelopeGenerator.Application.DTOs.Receiver;
 
+[ApiExplorerSettings(IgnoreApi = true)]
 public record ReceiverReadDto(
     int Id,
     string EmailAddress,

EnvelopeGenerator.Application/DTOs/Receiver/ReceiverUpdateDto.cs

@@ -1,5 +1,7 @@
 using DigitalData.Core.Abstractions;
+using Microsoft.AspNetCore.Mvc;
 
 namespace EnvelopeGenerator.Application.DTOs.Receiver;
 
+[ApiExplorerSettings(IgnoreApi = true)]
 public record ReceiverUpdateDto(int Id, string? TotpSecretkey = null, DateTime? TfaRegDeadline = null) : IUnique<int>;