fix issues and awesome improvements in surfl functionality

[gilbertogalvis]

This PR fix issues and do awesome improvements with surfl functionality. surfl previous version was very poor and failed for many cases. This new version is really awesome and work for any case. This PR was tested for all examples in https://github.com/plotly/ssim_baselines/tree/main/matlab/code-examples/surface-and-mesh-plots/surfl

It is very important to highlight that to use this new functionality, 'TreatAs' optional parameter must set to 'surfl'. Example of usage bellow

[X,Y] = meshgrid(1:0.5:10,1:20);
Z = sin(X) + cos(Y);
surfl(X,Y,Z);

fig2plotly(gcf, 'offline', false,  'TreatAs', 'surfl');

Screenshots of results are shown bellow

Links to Plotly Chart-Studio

https://chart-studio.plotly.com/~galvisgilberto/4446/#/
https://chart-studio.plotly.com/~galvisgilberto/4448/#/
https://chart-studio.plotly.com/~galvisgilberto/4450/#/
https://chart-studio.plotly.com/~galvisgilberto/4454/#/
https://chart-studio.plotly.com/~galvisgilberto/4456/#/