Allow OGC standard protocols as WMS and WFS

[severinmenard]

Is your feature request related to a problem? Please describe. Watch the SotM FR 2023 presentation ans saw that allowing layers to be shared between maps is in the roadmap, so why not using the existing interoperable OGC protocols?

Describe the solution you'd like Allowing WMS/WFS layers, both for uMap generated layers and external layers