YTVideoUrlFetcher: Add missing includes for release builds
YTVideoUrlFetcher: Add missing includes for release builds

Some more headers were needed to make the code compile in release mode.

tworaz/sailfish-ytplayer,tworaz/sailfish-ytplayer,RobertMe/sailfish-ytplayer,RobertMe/sailfish-ytplayer,RobertMe/sailfish-ytplayer,tworaz/sailfish-ytplayer,tworaz/sailfish-ytplayer,RobertMe/sailfish-ytplayer,RobertMe/sailfish-ytplayer,tworaz/sailfish-ytplayer