Embed namespace in the class definition

[foximoxi]

I would like to propose additional class definition with embedded namespace
Instead of:

namespace MyNamespace;

public class Foo
{
    //...code
}

public class MyNamespace.Foo
{
     //...code
}

There is as lot of situations where it is required to produce simple classes (e.g. models) and this would save one or two lines which improves readability of the code

[ufcpp]

#711

[AndersKehlet]

I think it made sense to consider prior to file-scoped namespaces, but at present you'd literally just be saving a single line. Honestly doesn't seem worthwhile to me.