feat: now language are read from OS settings at start

When player preferences are created for the first time, an OS call has been added to try to read the user preferences, if it is not supported it use en as fallback

Author: simone-lungarella

scripts/utility/player_save.gd

@@ -12,7 +12,17 @@ func check_savegame_integrity(world: LevelContainer) -> bool:
 	if player_options == null:
 		print("No settings preferences found, resetting")
 		player_options = PlayerOptions.new()
+
+		# Select starting language
+		var language: String = OS.get_locale_language()
+		print("No language set, reading from OS: [%s]" % language)
+		if GlobalConst.AVAILABLE_LANGS.has(language):
+			player_options.language = language
+		else:
+			print("[%s] not supported, falling back to English" % language)
+
 		has_change = true
+
 	# check custom levels and custom progress
 	if !custom_levels.is_empty():
 		for id in range(custom_levels.size()):