Fix date/time editor default sizes and add showcase

Author: tznind

Showcase/DateTimes.Designer.cs

@@ -0,0 +1,20 @@
+
+//------------------------------------------------------------------------------
+
+//  <auto-generated>
+//      This code was generated by:
+//        TerminalGuiDesigner v2.0.2.0
+//      You can make changes to this file and they will not be overwritten when saving.
+//  </auto-generated>
+// -----------------------------------------------------------------------------
+namespace Showcase {
+    using Terminal.Gui;
+    
+    
+    public partial class DateTimes {
+        
+        public DateTimes() {
+            InitializeComponent();
+        }
+    }
+}

Showcase/DateTimes.cs

@@ -12,7 +12,8 @@ static void Main(string[] args)
             Type[] types = [
                 typeof(Menus),
                 typeof(Buttons),
-                typeof(Checkboxes)
+                typeof(Checkboxes),
+                typeof(DateTimes)
                 ];
 
             using (var app = Application.Create())

Showcase/Program.cs

@@ -398,6 +398,8 @@ public static View Create( Type requestedType )
             { } t when t == typeof( Button ) => Create<Button>( ),
             { } t when t == typeof( Line ) => Create<Line>( ),
             { } t when t == typeof( LinearRange ) => Create<LinearRange>( ),
+            { } t when t == typeof(DateEditor) => Create<DateEditor>(),
+            { } t when t == typeof(TimeEditor) => Create<TimeEditor>(),
             { } t when t == typeof(Label) => Create<Label>(),
             { } t when t == typeof(TextView) => Create<TextView>(),
             { } t when t == typeof(ColorPicker) => Create<ColorPicker>(),