Add missing IOC codes

[giedrius-timinskis]

• Kosovo - https://www.olympic.org/kosovo
• Federated States of Micronesia - https://www.olympic.org/federated-states-of-micronesia
• British Virgin Islands - https://www.olympic.org/virgin-islands-british

[evdb]

Thank you - now on NPM as v0.0.29 :)