Kettle -> Gemini: RnD and Atmos revamp (#21866)

* Add files via upload

* Add gemini to map_attributions.txt

* Create gemini map proto

* Derotate Kettle, rotate Gemini

* Add Gemini to PostMapInitTest.cs

* Gemini locstrings

* Upload gemini map file

* Upload current master version of Kettle for historic record

* Continue testing Kettle as it is not removed entirely

* Fix Gemini prototype

* Christmas on Gemini station

Resources/map_attributions.txt

@@ -25,6 +25,9 @@
 - files: ["kettle.yml"]
   authors: Checkraze
 
+- files: ["gemini.yml"]
+  authors: Checkraze, TsjipTsjip, Luckyshotpictures
+
 - files: ["marathon.yml"]
   authors: Emisse