Add Australia to map rotation (#377)

## Description:
I've added the Australia map to map rotation
<Nikola123>

src/server/Master.ts

@@ -288,6 +288,7 @@ function getNextMap(): GameMapType {
     Mars: 2,
     Britannia: 2,
     GatewayToTheAtlantic: 2,
+    Australia: 2,
     Iceland: 2,
   };