Feature: add a country code

[a0m0rajab]

Type of feature

🍕 Feature

Current behavior

for the location, it would be great to have the countries selected from a list, this will help to have a correct stats without the need to fix/normalize the location based on the information that provided, the issue is that there is no unified style of people.

Suggested solution

An extra selection for country code would be awesome.

Additional context

faced this issue when I I worked on https://github.com/a0m0rajab/contributor_map_npm

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