AttributeArgument.Value is not always ITypedConstant or ITypedConstant[]

[Xriuk]

When casting the IAttributeArgument.Value to ITypedConstant i got an error saying "int cannot be casted to ITypedConstant", so I checked and here: https://github.com/NeVeSpl/NTypewriter/blob/7928b542199daf13a4bf6fade55c3ced2dfd63aa/NTypewriter.CodeModel.Roslyn/TypedConstant.cs#L30-L41 It looks that it's not always creating an ITypedConstant, but it can also be an INamedType or even just a plain object with the actual value.

So I don't know if the docs are not updated or there is an error in the code above https://github.com/NeVeSpl/NTypewriter/blob/master/Documentation/CodeModel.md#iattributeargument

[NeVeSpl]

Docs are not updated, Using ITypedConstant for every possible type caused too many unforeseen breaking changes, so its usage was restricted only for enums for now.

[xumix]

Here is another TypedConstant bug:

var jsonConverterAttribute = property.Attributes?.FirstOrDefault(x => x.FullName == "Newtonsoft.Json.JsonConverterAttribute");

            if (jsonConverterAttribute != null && jsonConverterAttribute.Arguments.Any(x => x.Value.ToString() == "HighPrecisionDecimalConverter"))
            {
                return "string";
            }

The code .Any(x => x.Value.ToString() == "HighPrecisionDecimalConverter") causes error TypedConstant is an array. Use Values property.

[NeVeSpl]

@xumix, it would be nice to have a separate issue for this and also it would also be nice if that issue contained everything needed to reproduce a bug.

[xumix]

@xumix, it would be nice to have a separate issue for this and also it would also be nice if that issue contained everything needed to reproduce a bug.

Done in #92