3D wireframe plot for multiple single-spectra workspaces with custom y-axis values

[RichardWaiteSTFC]

Is your feature request related to a problem? Please describe.
Following on from PR #38599 - wireframe plotting has been enabled on multiple single-spectra workspaces ( Plot > 3D > Wireframe) - but the 1D curves are all plotted at the same y-axis value (spectrum number).

Describe the solution you'd like

I would like to do an equivalent wireframe plot to the surface plot Plot > Advanced > Surface

i.e. let the use specify which spectrum to plot from each workspace and plot them with a different y-axis value per workspace - i.e. adding a Wireframe option to the following menu

An easy option is just to set the color of the surface faces to be transparent (e.g. nan) - this wouldn't be quite as nice as the plot on the RHS which uses a different color for each workspace, but maybe worth doing? One could also just do N x 1D lines on the same 3D axis (i.e. don't have lines going between adjacent spectra).