We have already seen all of the technology required to make a star. The asgard gravity device that collapsed their homeworlds star, and the time dilation bubble. Fly into a nebula or some sort of hydrogen gas cloud and set off the gravity thingie, got out of the hot zone and turn on the time dilation field and turn it off when the stars the right age. Do the same thing with the protoplanetary disk and presto, instant planet. This would get a star and planet of different ages using technology earth currently has available.
Comment