[EC-528] Refactor Custom Fields into separate components (#1662)

* Refactored CustomFields to stop using RepeaterView and use BindableLayout and divided the different types on different files and added a factory to create them

* Fix formatting

src/App/Lists/ItemLayouts/CustomFields/HiddenCustomFieldItemLayout.xaml.cs

@@ -0,0 +1,12 @@
+using Xamarin.Forms;
+
+namespace Bit.App.Lists.ItemLayouts.CustomFields
+{
+    public partial class HiddenCustomFieldItemLayout : StackLayout
+    {
+        public HiddenCustomFieldItemLayout()
+        {
+            InitializeComponent();
+        }
+    }
+}