feat: 2e save character initial implementation WIP

2e is hidden behind url navigation hiding, so hoping that nobody found it yet.

Note: DB migration make this commit a bit risky!

Kemkas.Web/ViewModels/KarakterTulajdonsagokDto.cs

@@ -2,6 +2,9 @@ using System.Text.Json.Serialization;
 
 namespace Kemkas.Web.ViewModels;
 
+/// <summary>
+/// currently the same for 1st edition and 2nd edition, be cautious!
+/// </summary>
 public struct KarakterTulajdonsagokDto
 {
     [JsonPropertyName("t_ero")]