Add map world inverted (#4189)

Resolves #4187

## Description:
Add Map - World Inverted

1248x2500, 1,561,000 land tiles
~100 standard. Over 250+ total.
https://www.youtube.com/watch?v=w2LVZQXZoaU
https://discord.com/channels/1284581928254701718/1509034328766812210

## Please complete the following:

- [X] I have added screenshots for all UI updates
- [X] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [X] I have added relevant tests to the test directory


## Please put your Discord username so you can be contacted if a bug or
regression is found:

PlaysBadly

map-generator/main.go

@@ -109,6 +109,7 @@ var maps = []struct {
 	{Name: "twolakes"},
 	{Name: "venice"},
 	{Name: "world"},
+	{Name: "worldinverted"},
 	{Name: "yellowsea"},
 	{Name: "yenisei"},
 	{Name: "big_plains", IsTest: true},