Add long/lat and IAC as location setting

[HolgerKoether]

From discord: "Holgar, Firstly, many congrats to you and the team responsible for the great work on the IOTA Industry Marketplace.! It would be great if we could have Long/Lat conversion selection (or options for) What Three Words (https://what3words.com/) and/or IOTA Area Codes (developed by Martin Janes). We have an app we have been co-working on with two UK Universities that will use the Industry Marketplace for energy pack delivery, initially this is for 'last mile' MaaS and then, for on-farm 'productive use of energy' by off-grid farmers in rural Africa to cold chain their crops before movement to market. We have recently discussed this with your colleague, Florian Doebler."

--> consider adding Long/Lat --> consider adding IAC (back in)