Dynamic load of wfs/vector feature client side

[allyoucanmap]

Description

The current implementation of WFS/Vector data is loading all the features at once in the main thread of the application. This behaviours could slow down interaction with the viewer for this reason we should investigate following improvements:

• [ ] semplification and filtering of features based on the current view and zoom level WFS/Vector

What kind of improvement you want to add? (check one with "x", remove the others)

• [x] Minor changes to existing features

Other useful information