A helper method equivalent to the [GraphQLNonNullType] attribute for IObjectFieldDescriptor

Currently in Hot Chocolate, unless you use C# 8.0 nullable reference types (which is not really a nice-to-use and pretty feature, and has its own limitations and problems), you would have to explicitly specify which properties/methods that have a reference type should be non-nullable.

You could currently do this using attributes like this:

[GraphQLNonNullType]
public string Title { get; set; }

But to achieve the same thing using IObjectFieldDescriptor's fluent API, this is what you would have to do:

descriptor.Field(p => p.Title).Type<NonNullType<StringType>>();

which is:

• Ugly and long
• The StringType part is effectively unnecessary and redundant
• Looking at that line of code, you're not sure whether the type itself is being changed or it's just being set to non-nullable.

I'm sure you would agree that having a nice little helper method like NonNull() would make the code above way cleaner, more readable, and more understandable at first sight.

descriptor.Field(p => p.Title).NonNull();

It also makes sense to have such a method since we already have the attribute that does the exact same thing.

What do you think?