Add Vector.is_collinear

[gumyr]

    def is_collinear(self, vec: Vector) -> bool:
        """Vectors are collinear if one is a scalar multiple of the other. A positive scalar
              indicates the same direction, while a negative scalar indicates the opposite direction.
        """
        return abs(self.dot(vec)) > 1 - TOLERANCE

[snoyer]

would it be the same as this?

def is_collinear(self, other: VectorLike, angular_tolerance: float=TOLERANCE):
    return self.wrapped.IsParallel(Vector(other).wrapped, angular_tolerance)

[gumyr]

Yes. Probably should add the normal and opposite methods as well.