Added PrivacyLevel option to FieldDefinition for later usage

Fixes #5107

Co-Authored-By: Taloth <Taloth@users.noreply.github.com>

src/NzbDrone.Core/Annotations/FieldDefinitionAttribute.cs

@@ -21,6 +21,7 @@ namespace NzbDrone.Core.Annotations
         public Type SelectOptions { get; set; }
         public string Section { get; set; }
         public HiddenType Hidden { get; set; }
+        public PrivacyLevel Privacy { get; set; }
         public string RequestAction { get; set; }
     }
 
@@ -62,4 +63,12 @@ namespace NzbDrone.Core.Annotations
         Hidden,
         HiddenIfNotSet
     }
+
+    public enum PrivacyLevel
+    {
+        Normal,
+        Password,
+        ApiKey,
+        UserName
+    }
 }