I didn't see oil having a way to create a module file structure so I just create this real quick.. +1 for oil generate module. You want to be in your top level directory when calling it. Same directory as oil.
function fuel_module()
{
CURRENT_PATH=`pwd`
cd fuel/app/modules
mkdir -p $1/{classes,config,lang,views}
mkdir -p $1/classes/{controller,model,view}
cd $CURRENT_PATH
}
Oil doesn't really get involved with modules at all right now. We'll be integrating the two a little more soon, I just want to get the logic awesome before confusing it all with two potential file structures.