finding neighbor countries using region or geo location

[MrAliSalehi]

not sure if its possible or not but I think it would be really nice to have something like this:

let country = keshvar::find_by_code(98);

let neighbors: Vec<Country> =  keshvar::near_countries(country);

[pouriya]

I think it's doable if we stick with coutries' geo information.