Add new Bering Sea map, reduce Strait rotation (#3706)

## Description:

Re-submission of older PR:
https://github.com/openfrontio/OpenFrontIO/pull/3617
<img width="612" height="396" alt="image"
src="https://github.com/user-attachments/assets/955a0b2e-1df9-4fa3-a389-235f46a90f69"
/>

Regarding Bering Sea and Bering strait maps:
<img width="576" height="87" alt="image"
src="https://github.com/user-attachments/assets/f57031eb-f9c0-4e1e-83ff-204df51bb6c2"
/>
<img width="589" height="93" alt="image"
src="https://github.com/user-attachments/assets/629e71ba-489f-41cf-b67e-2476af8704f2"
/>

Because of mixed opinions about replacing the maps, i propose at least
this temporary compromise: Bering Sea gets added as a new map and Bering
Strait gets its rotation lowered to a small number. Since the classic
maps are probably being taken off rotation, we should have some small
breathing space for the 2 maps.

In the near future we should discuss between mapmakers in the dev server
whether we keep, replace or completely take Bering Strait off rotation,
and/or a community poll.

## 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

@@ -44,6 +44,11 @@ Licensed under [Open Data Commons Open Database License (ODbL)](https://opendata
 Copernicus Global Digital Elevation Models distributed by OpenTopography.
 Copyright © opentopography.org. All Rights Reserved. [Terms of Use](https://opentopography.org/usageterms)
 
+### NASA
+
+[NASA Earth Observatory](https://science.nasa.gov/earth/earth-observatory/blue-marble-next-generation/topography-bathymetry-maps/)
+[Public Domain](https://www.nasa.gov/nasa-brand-center/images-and-media/)
+
 ### Hawaii Relief Map
 
 [USA Hawaii relief location map](https://commons.wikimedia.org/wiki/File:USA_Hawaii_relief_location_map.svg) by NordNordWest