NSL intensity factor for traffic is now adjustable for templates and new projects

The NSL (Nationaal Samenwerkingsprogramma Luchtkwaliteit) factor used for traffic calculations is by default set to 1.22 / 24 = 0.051. To accomodate better finetuning of the results, this value can now be adjusted in the template settings, or in the advanced options when generating a new project.

See also: https://previewsupport.tygron.com/wiki/Version_2024.3.0