Send local games states notifications on start (do not rely on whether Galaxy call get_local_games)

[bartok765]

Fixes #44

• removes boolean that prevented local game states notification if get_local_games was not called at least once (I don't know what was the initial purpose of this logic). Instead start watching local files and registry after handshake_complete method is called. Before this method is called all notifications about local game statuses are ignored by Galax
• add tests for update_local_game_status notifications
• remove redundant notification with LocalGameState.None_ when not-fully installed and not playable game is detected