[Feature Request] Add GuessTheFlag game

[gspxrk]

Describe the idea
There are a lot of Geography enthusiasts that love Flags and Countries, you could add a game like this via https://countryflagsapi.com
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Expected Behaviour
Via Math.random() we could make sure a different flag comes out every time, and add a button called "Guess", which when is clicked returns a modal where you can input the country's name that owns the flag. You could make this into a multiplayer game as well, where the first person to guess the flag wins.

Screenshots
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Additional context
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[retrouser955]

Me and Aniket planned a library for this but it seems like he is offline for an extended period. If anyone want this code, it's here