Automatic binding

[Peter-Butler]

It's because I'm having problems with binding but wouldn't it be nice to have something like this:
[binding] int rotation;
and the same for class fields.
For many items syntax like
[binding]
{
int a;
int b;
} // could save a little typing
Might be related: #6846

[Peter-Butler]

The following is abstracted from https://learn.microsoft.com/enus/dotnet/maui/fundamentals/databinding/binding-mode?view=net-maui-9.0#viewmodels-and-property-change-notifications
Except I have simplified it using my suggestion.

public class HslColorViewModel : INotifyPropertyChanged
{
  [binding]
  {
    Color color;
    string name;
    float hue;
    float saturation;
    float luminosity;
  }
  color = Color.FromHsla(hue, saturation, luminosity);
  [binding] string name = NamedColor.GetNearestColorName(color);
}```
It’s much shorter to accomplish the same result.
  I have no preference for the eventual syntax. The word “binding” in square brackets looked reasonable to me. Binding groups is a natural extension of binding single items. 
  It might be reasonable to have one instance of HslColorViewModel.
```C#
HslColorViewModel demo;```
Then in an xaml file:
Label … {Binding demo.color} />