Generate Spiral Staircase Operator

Made the Spiral Staircase script from one of the previous articles into an operator.

There's incentive in turning scripts into operators. Not talking about the ease of use that comes out of it – that is obviously true – but more from an observation point of view.

When playing with the parameters, you can clearly see that increasing the Ceiling Height takes a hit on the performance compared to any other parameters. Wondering what's causing it.

Would be a good exercise find out why, and maybe come up with a better implementation.

By the way, in case you missed the previous articles on generating a spiral staircase: salaivv.com/2023/07/27/bmesh-spiral-staircase