Add Zipcodes/PostalCodes on the Cities(not states nor countries API endopoints),Optional recommendation to add provinces/countys at the same category

[zacky420]

this would be good to expand the API's capabilities, and extend even more this API, i can give you the Schema if needed, it should be like this:

zipcode string

This because there are some countries that instead of having the 5 number standard, has letters too like UK(as always😒), so putting it on only numbers would be a bad idea

You can add provinces in States, so you can fix the UK County problems, and others relate(Valencia has 3 provinces/countys, Valencia, Alicante & Castellón).