add shortcut to gus.show

[j042]

Overview

often, I need to import gustaf separately just to use gus.show() let's save that step

Showcase

A short / one-liner example to highlight the (new) feature

import splinepy

splinepy.show(splinepy.helpme.create.surface_circle(12), splinepy.helpme.create.box(1,2,3))

Checklists

• [ ] Documentations are up-to-date.
• [ ] Added example(s)
• [ ] Added test(s)

[j042]

"aye"