New Feature, VisualBasic With Keyword Syntax for property mapping

Hi, currently, if we want to get or set property value to another object, 7 lines of code must be used,

Current:
```vbnet

Dim _value As

Public Property Value As String
Get
Return _value.Label
End Get
Set
_value.Label = value
End Set
```

This is not so convenient and not a brief code, and I think this situation can be simplify with the VisualBasic ``With`` keyword

```vbnet
Dim _value As

' maps both get and set
Public Property Value As String With _value.Label
' maps readonly
Public ReadOnly Property Value2 As String With _value.Label
' maps writeonly
Public WriteOnly Property Value3 As String With _value.Label
```

Or with two lines of code syntax

```vbnet
Dim _value As

' maps both get and set
Public Property Value As String
With _value.Label

' maps readonly
Public ReadOnly Property Value2 As String
With _value.Label

' maps writeonly
Public WriteOnly Property Value3 As String
With _value.Label
```

Which it means the ``Value`` property its value was mapped to the property of another object ``_value.Label``, this will makes the code more beautiful and briefly.