Contour3issues ratio aspect camera eye

[gilbertogalvis]

This PR fix issues with using contour3. Specifically regarding AspectRatio and CameraEye on the plotly figure. Two new optional parameters are proposed for this:

• AspectRatio
• CameraEye

Those parameter can be passed when we invoke fig2plotly, but they can set by default as well

[danton267]

This works for all contour3 MATLAB online documentation examples, except for

[X,Y] = meshgrid(-5:0.25:5);
Z = X.^2 + Y.^2;
contour3(Z);