Add Ljubljana high-res orthophotos

[matheusgomesms]

trafficstars

Per discussion: https://community.openstreetmap.org/t/who-can-make-the-ljubljana-orthophoto-available-in-id/108171/12

Still figuring it out the license, but opening issue here for following PR.

URL: https://gis06.ljubljana.si/arcgis/services/Podloge/DOF1_2023_D96/MapServer/WmsServer?FORMAT=image/png&TRANSPARENT=FALSE&VERSION=1.3.0&SERVICE=WMS&REQUEST=GetMap&LAYERS=0&STYLES=&CRS={proj}&WIDTH={width}&HEIGHT={height}&BBOX={bbox}