imgui_node_editor grid size should be configurable

[bgribble]

This is a feature request for imgui_node_editor.

The optional "grid" drawing feature (code), as you might guess, draws a grid on the node-editor canvas. It is hardcoded to each grid cell being 32x32 canvas units.

It would be great if this was a Style variable so that the grid could be set to correspond with internal program measurement units.

[pthom]

Hi,

Sorry for the delay. I postponed my answer, since it requires modifying an external repository. I ended up making a commit in my fork. So, this should land in the next release