api: add OPTIONS method to cors whitelist
api: add OPTIONS method to cors whitelist

Liamraystanley/geoip.cf,Liamraystanley/geoip.cf,lrstanley/geoip,Liamraystanley/geoip.cf,Liamraystanley/geoip.cf,lrstanley/geoip,lrstanley/geoip