Add new attribute [ObservableModel]

[mcNets]

I think could be good to have a class attribute that marks all private members of a class as [ObservableProperties].

For instance you could reduce this code:

public partial class MyModel : ObservableObject
{
    [ObservableProperty]
    private string _id;

    [ObservableProperty]
    private string _name;

    [ObservableProperty]
    private string _someProp;

    [ObservableProperty]
    private string __otherProp;
}

to something like this:

public partial class MyModel : ObservableModel
{
    private string _id;
    private string _name;
    private string _someProp;
    private string __otherProp;
}

or something like:

public partial class MyModel : ObservableObject
{
    // ObservableProperties
    private string _id;
    private string _name;
    private string _someProp;
    private string __otherProp;
    // ObservableProperties
}

I think it could be useful especially if you are working with objects with a lot of properties.