[Feature] Adds Tribe Themes to all real world maps + Custom Tribes w/coords on LA

[crunchybbb2]

Purpose

Tribe themes were created by @FloPinguin: #4647;
However, they were not implemented, this PR will implement them.
Also I want to sneak the Custom Tribes w/ Coordinates (by @FloPinguin #4697) into the Los Angeles map so it isn't a "feature that isn't implemented" (we should have one map using it for testing and feedback purposes)

This is for v33 (Last minute feature release lol)

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Objectives

• Adds tribe themes to all maps containing a continental category like "categories": ["europe"]
• In the format of: "themes": ["europe"]
• Adds around 130 custom tribes with coordinates to the LA map in the form of suburbs, cities and districts
• For testing purpose i added western theme to Las Vegas Strip and scary theme to Achiran

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Description

^China using the custom Asian theme ^The Los Angeles suburbs and district tribes are highlighted yellow

Assignment

• I'd like to be assigned to this issue and work on it myself

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[Discord Name if Different] crunchybbbbb

[github-actions]

Hi @crunchybbb2, thanks for opening this issue. It hasn't been approved by a maintainer yet — we'll get back to you shortly to either milestone it (approval) or close it.

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