I need to move my sink over about 2 feet and turn it around a half turn. In addition, I will be installing a dishwasher almost where the sink used to be.

What kind of fittings will I need to extend the pipes and drainage and also install the dishwasher?

The dishwasher is easy because you can just add a coupling to the supply line and run a few more feet. If you don't like that idea just buy a longer copper flex line to supply the hot water. Run the drain to your disposal if you have one. If no disposal just get a drain pipe for above the P trap that has a T branch for the washer drain. The sink is a bit more involved but simliar in connecting. The supply lines can be extended with longer flex lines or you can solder 2' extensions to your supply lines. You existing sink drain and P trap can be reuse but you will extend the lateral line to the wall with 2' of PVC. Make sure the 2' extension is slightly running down to the pipe coming from the wall, not perfectly horizontal.