Add Arctic map (#3341)

## Description:

Adds Arctic map, a map centered about the Geographical North Pole using
an azimuthal equidistant projection. Features Cold War themed countries
and subdivisions as nations. Square map with 1.6M land tiles. Terrain
data from Opentopography and Arctic SDI real relief data

<img width="1830" height="1830" alt="image"
src="https://github.com/user-attachments/assets/0b8b1e42-f477-4ebf-a256-c07536db87d9"
/>

## 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
- [x] I confirm I have thoroughly tested these changes and take full
responsibility for any bugs introduced

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

tri.star1011

CREDITS.md

@@ -54,6 +54,11 @@ Licensed under [CC BY-SA 3.0 DE](https://creativecommons.org/licenses/by-sa/3.0/
 [Niledelta 33](https://commons.wikimedia.org/wiki/File:Niledelta_33.svg) by John187
 Licensed under [CC BY-SA 4.0](https://creativecommons.org/licenses/by-sa/4.0/)
 
+### Arctic Map
+
+[Arctic SDI](https://catalogue.arctic-sdi.org/geonetwork/srv/spa/catalog.search#/metadata/8b4f2b34-2d0d-4744-ae0f-d7989b9f7a02)
+Licensed under [CC0 1.0.](https://creativecommons.org/publicdomain/zero/1.0/legalcode.en)
+
 ## Icons
 
 ### [The Noun Project](https://thenounproject.com/)