Use base model in database.

DiscImageChef.Database/Models/Filter.cs

@@ -30,14 +30,10 @@
 // Copyright © 2011-2019 Natalia Portillo
 // ****************************************************************************/
 
-using System.ComponentModel.DataAnnotations;
-
 namespace DiscImageChef.Database.Models
 {
-    public class Filter
+    public class Filter : BaseModel<int>
     {
-        [Key]
-        public int Id { get;              set; }
         public string Name         { get; set; }
         public bool   Synchronized { get; set; }
         public ulong  Count        { get; set; }