if you have a high repair skill for ships in your skills list will you repair a ships hull and increase ship shield regeneration quicker than if you had NPCs or whatever?

Shield regeneration has nothing to do with repair.

As for the rest, that has not been decided yet.

So there is no point in getting skills for repairing ships and vehicles?

There is, because ships and vehicles will need to be repaired and those will be the relevant skills to do so. However, exactly how that will work has not been decided yet.

And I suppose the same goes for items, right?

The same goes for pretty much everything you don't see the rules for in the Technical Section. And, potentially, some of the stuff that is there because they're always looking for improvements that can be made.