Rim3dView_setTimeStep validates the time step against the owner case
and updates the view. RicfSetTimeStep forwards to it, looping over all
views of the case when viewId is -1. The hand-written Python
View.set_time_step() wrapper is removed since the generated method has
the same name and signature.
Also fix the argument description of the new Rimc methods: the whatsThis
text is the third variadic argument of CAF_PDM_InitScriptableField.
Rim3dView_clone copies an Eclipse or GeoMech view into the same case
and returns the new view. RicfCloneView forwards to it. Add a
project-wide RicfForwarding::findView(viewId) helper. The hand-written
Python View.clone() wrapper is removed since the generated method has
the same name and signature.