Three Ellipse Intersections methods need Rotated Ellipse Versions

[Shkyrockett]

Three of the methods for finding intersections with ellipses are only implemented using unrotated ellipses. They need to be implemented as rotated variants to permit the full spectrum of intersections possible.
The methods are:

• Engine.Intersections.QuadraticBezierUnrotatedEllipseIntersection(...)
• Engine.Intersections.CubicBezierUnrotatedEllipseIntersection(...)
• Engine.Intersections.UnrotatedEllipseUnrotatedEllipseIntersection(...)