adding hidden basic asp.net core backend (#30)

Base functionality:

    DB
    email sending
    user registration & login
    storing new characters and reading them back

Notes:

    Functionality is "hidden" with no links pointing to it.
    Most pages are scaffolded and not reviewed at all :(
    local Dev db setup is pushed to git
    NO local email setup :(

Kemkas.Web/Db/Models/V1KarakterKepzettseg.cs

@@ -0,0 +1,17 @@
+using System.ComponentModel.DataAnnotations;
+using System.ComponentModel.DataAnnotations.Schema;
+using Kemkas.Web.Db.Enums;
+
+namespace Kemkas.Web.Db.Models;
+
+public class V1KarakterKepzettseg
+{
+    [Key]
+    public Guid Id { get; set; }
+    public Guid KarakterId { get; set; }
+    public Kepzettseg Kepzettseg { get; set; }
+    public bool IsTolvajKepzettseg { get; set; } = false;
+    
+    [ForeignKey(nameof(KarakterId))]
+    public virtual V1Karakter Karakter { get; set; }
+}