[FEATURE] Generate cryptarithms with countries, regions, and cites

[arnaud-m]

Is your feature request related to a problem? Please describe.
Generate geographical cryptarithms.

Describe the solution you'd like
Create the word list by executing a request on a geographical API chosen among 11 Popular Cities APIs.

• GeoDB Cities API, or
• Spott API ?
• Country State City API

Describe alternatives you've considered
Creating word lists, but it lacks flexibility.