Add support for OData V3 geography/geometry types

[object]

The following EDM type values should be properly handled:

    public static readonly EdmType Geography = new EdmType("Edm.Geography");
    public static readonly EdmType GeographyPoint = new EdmType("Edm.GeographyPoint");
    public static readonly EdmType GeographyLineString = new EdmType("Edm.GeographyLineString");
    public static readonly EdmType GeographyPolygon = new EdmType("Edm.GeographyPolygon");
    public static readonly EdmType GeographyCollection = new EdmType("Edm.GeographyCollection");
    public static readonly EdmType GeographyMultiPoint = new EdmType("Edm.GeographyMultiPoint");
    public static readonly EdmType GeographyMultiLineString = new EdmType("Edm.GeographyMultiLineString");
    public static readonly EdmType GeographyMultiPolygon = new EdmType("Edm.GeographyMultiPolygon");
    public static readonly EdmType Geometry = new EdmType("Edm.Geometry");
    public static readonly EdmType GeometryPoint = new EdmType("Edm.GeometryPoint");
    public static readonly EdmType GeometryLineString = new EdmType("Edm.GeometryLineString");
    public static readonly EdmType GeometryPolygon = new EdmType("Edm.GeometryPolygon");
    public static readonly EdmType GeometryCollection = new EdmType("Edm.GeometryCollection");
    public static readonly EdmType GeometryMultiPoint = new EdmType("Edm.GeometryMultiPoint");
    public static readonly EdmType GeometryMultiLineString = new EdmType("Edm.GeometryMultiLineString");
    public static readonly EdmType GeometryMultiPolygon = new EdmType("Edm.GeometryMultiPolygon");