Ability to define a default grid

[patrick_h_lauke]

I have a few custom grids defined that I use all the time. It would be nice to be able to set a grid as default, so that it would always be applied without having to explicitly going into Grid and Snapping Axis and manually having to select it. Maybe an extra button/option in the presets manager to say "Make default", and having that then applied by default whenever the grid is turned on.

And/or having Affinity at least remembering the last grid used and pre-selecting that.