[tts] Restore languages.hpp in platform directory

iphone/Maps/Classes/CustomViews/NavigationDashboard/Sound/MWMTextToSpeech.mm

@@ -7,7 +7,7 @@
 #include "LocaleTranslator.h"
 
 #include "Framework.h"
-#include "sound/tts/languages.hpp"
+#include "platform/languages.hpp"
 
 using namespace locale_translator;
 

platform/languages.hpp

@@ -0,0 +1,49 @@
+#pragma once
+
+#include <array>
+#include <string>
+#include <utility>
+
+// The list of languages which can be used by TTS.
+// It shall be included in Android (jni) and iOS parts to get the languages list.
+
+namespace routing
+{
+namespace turns
+{
+namespace sound
+{
+std::array<std::pair<std::string, std::string>, 28> const kLanguageList =
+{{
+  {"en", "English"},
+  {"ru", "Русский"},
+  {"es", "Español"},
+  {"de", "Deutsch"},
+  {"fr", "Français"},
+  {"zh-Hant", "中文繁體"},
+  {"zh-Hans", "中文简体"},
+  {"pt", "Português"},
+  {"th", "ภาษาไทย"},
+  {"tr", "Türkçe"},
+  {"ar", "العربية"},
+  {"cs", "Čeština"},
+  {"da", "Dansk"},
+  {"el", "Ελληνικά"},
+  {"fi", "Suomi"},
+  {"hi", "हिंदी"},
+  {"hr", "Hrvatski"},
+  {"hu", "Magyar"},
+  {"id", "Indonesia"},
+  {"it", "Italiano"},
+  {"ja", "日本語"},
+  {"ko", "한국어"},
+  {"nl", "Nederlands"},
+  {"pl", "Polski"},
+  {"ro", "Română"},
+  {"sk", "Slovenčina"},
+  {"sv", "Svenska"},
+  {"sw", "Kiswahili"}
+}};
+}  // namespace sound
+}  // namespace turns
+}  // namespace routing