Migrate from Xamarin.Forms Entry to .NET MAUI Entry

Overall, Telerik .NET MAUI Entry control preserves the same API as Xamarin.Forms Entry with a few changes and improvements listed below.

Migrate Namespaces

Control	Control name	XAML Namespcace	C# Namespace
Xamarin Entry	`RadEntry`	xmlns:telerikInput="clr-namespace:Telerik.XamarinForms.Input;assembly=Telerik.XamarinForms.Input"	using Telerik.XamarinForms.Input;
.NET MAUI Entry	`RadEntry`	xmlns:telerik="http://schemas.telerik.com/2022/xaml/maui"	using Telerik.Maui.Controls;

Xamarin Entry	.NET MAUI Entry
`WatermarkText`	`Placeholder`
`WatermarkTextColor`	`PlaceholderColor`
-	`CharacterSpacing`
-	`IsTextPredictionEnabled`
-	`ReturnType`
-	`ClearButtonVisibility`
`CompletedCommand`	`ReturnCommand`
`BorderStyle.BorderColor`	`BorderBrush`
`BorderStyle.BorderThickness`	`BorderThickness`
`BorderStyle.CornerRadius`	`CornerRadius`
-	`ClearButtonColor`
-	`FocusedBorderBrush`
-	`FocusedBorderThickness`