Reflection_Engine: UnderlyingType returns wrong depth for arrays

[epignatelli]

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[epignatelli]

From historical comments:
This is related to BHoM/Grasshopper_UI#226

I don't know if it is intended, but if it is not, below the code to accomodate arrays: From this: https://github.com/BuroHappoldEngineering/BHoM_Engine/blob/f7650f27834436baed68ce0405e8f0402bc4771d/Reflection_Engine/Query/UnderlyingType.cs#L17-L27

To this:

    public static UnderlyingType UnderlyingType(this Type type)
    {
        int depth = 0;
        while ((type.GetGenericArguments().Count() == 1 || type.GetElementType() != null) && typeof(IEnumerable).IsAssignableFrom(type))
        {
            depth++;
            type = type.GetElementType() ?? type.GetGenericArguments().First();
        }

        return new UnderlyingType { Type = type, Depth = depth };
    }