Initial efcore migration and updates to make sure upserting novels (mostly) works. still need to do chapter handling

DBConnection/Models/Author.cs

@@ -1,4 +1,5 @@
 using System.ComponentModel.DataAnnotations;
+using Newtonsoft.Json;
 
 namespace DBConnection.Models;
 
@@ -7,5 +8,6 @@ public class Author : BaseEntity
     [Key]
     public string Url { get; set; }
     public string Name { get; set; }
+    [JsonIgnore]
     public List<Novel> Novels { get; set; }
 }