[PS-1080] Added text alternative to Boolean custom field icon (#2000)

* PS-1080 Added new accessibility text property to the custom field bool icon

* PS-1080 Added BoolValue property to the FieldView and added new AccessibilityProperty to bool icon

src/Core/Models/View/FieldView.cs

@@ -19,5 +19,6 @@ namespace Bit.Core.Models.View
         public string MaskedValue => Value != null ? "••••••••" : null;
         public bool NewField { get; set; }
         public LinkedIdType? LinkedId { get; set; }
+        public bool BoolValue => bool.TryParse(Value, out var b) && b;
     }
 }