Pass id to RunConfiguration constructor

It's what the base class requires, and opens the possibility to
have several factories creating the same type of run configuration.

Also move ios, winrt and android factories closer to their products,
it's the predominant pattern nowadays.

Change-Id: Iad48152f02a248d22cb18dd435a2fc34d73c7077
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/plugins/ios/iosconstants.h

@@ -51,7 +51,5 @@ const quint16 IOS_SIMULATOR_PORT_END = 31000;
 
 const char EXTRA_INFO_KEY[] = "extraInfo";
 
-const char IOS_RC_ID_PREFIX[] = "Qt4ProjectManager.IosRunConfiguration:";
-
 } // namespace Constants;
 } // namespace Ios