Add Kerala Fibre Optic Network

[duncandewhurst]

PDF map (more detail on routes, includes cable type, fewer pops): https://kfon.kerala.gov.in/wp-content/uploads/2021/02/CORE-MAP27102020.pdf

Google MyMaps / KML (more pops and spans, less detail on routes): https://kfon.kerala.gov.in/en/pop-locations-2/