[EC-259] Added Account Switching to Share extension on iOS (#1971)

* EC-259 Added Account switching on share extension on iOS, also improved performance for this and exception handling

* EC-259 code formatting

* EC-259 Added account switching to Share extension Send view

* EC-259 Fixed navigation on share extension when a forms page is already presented

* EC-259 Fix send text UI update when going from the iOS extension

* EC-259 Improved DateTimeViewModel with helper property to easily setup date and time at the same time and applied on usage

src/App/Controls/DateTime/DateTimePicker.xaml.cs

@@ -0,0 +1,34 @@
+using System.Runtime.CompilerServices;
+using Xamarin.CommunityToolkit.UI.Views;
+using Xamarin.Forms;
+
+namespace Bit.App.Controls
+{
+    public partial class DateTimePicker : Grid
+    {
+        public DateTimePicker()
+        {
+            InitializeComponent();
+        }
+
+        protected override void OnPropertyChanged([CallerMemberName] string propertyName = null)
+        {
+            base.OnPropertyChanged(propertyName);
+
+            if (propertyName == nameof(BindingContext)
+                &&
+                BindingContext is DateTimeViewModel dateTimeViewModel)
+            {
+                AutomationProperties.SetName(_datePicker, dateTimeViewModel.DateName);
+                AutomationProperties.SetName(_timePicker, dateTimeViewModel.TimeName);
+
+                _datePicker.PlaceHolder = dateTimeViewModel.DatePlaceholder;
+                _timePicker.PlaceHolder = dateTimeViewModel.TimePlaceholder;
+            }
+        }
+    }
+
+    public class LazyDateTimePicker : LazyView<DateTimePicker>
+    {
+    }
+}