Spanish translations (#422)

* Spanish translations for intro messages and some menus. Added Empty (save file) to lang files

* Spanish translations + new literals in all langs

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Co-authored-by: rnicar <rj.nieto.car@gmail.com>

src/locales/it/menu.ts

@@ -39,5 +39,9 @@ export const menu: SimpleTranslationEntries = {
     "weeklyRankings": "Weekly Rankings",
     "noRankings": "No Rankings",
     "loading": "Loading…",
-    "playersOnline": "Players Online"
+    "playersOnline": "Players Online",
+    "empty":"Empty",
+    "yes":"Yes",
+    "no":"No",
+    "confirmStartTeam":'Begin with these Pokémon?',
 } as const;