Adding Image to Axes in 3-D View not working properly

[xarico10]

When using image() on an existent chart to add an image to it, it's being plotted as a completely new chart, with it's own grid and not integrating to the existent one.

Z = 10 + peaks;
surf(Z)
hold on 
image(Z,'CDataMapping','scaled')

fig2plotly(gcf, 'offline', false);

Expected and generated (https://chart-studio.plotly.com/~xarico10/910/#/) plots:

Examples on doing this can be found on:
https://www.mathworks.com/help/matlab/ref/image.html#buryl46-1

[gilbertogalvis]

PR #346 fix this issue