Don't call Movie::SetTitleId from ES

Movie basically just wants to get the title ID of
the initally booted game, so let's set the title ID in
ConfigManager at boot like we do with the regular game ID.

Aside from being cleaner, this should make the approach to
title IDs compatible with booting non-disc software (WADs).

Source/Core/Core/ConfigManager.h

@@ -202,6 +202,7 @@ struct SConfig : NonCopyable
   std::string m_strDVDRoot;
   std::string m_strApploader;
   std::string m_strGameID;
+  u64 m_title_id;
   std::string m_strName;
   std::string m_strWiiSDCardPath;
   u16 m_revision;