Earlier quoted context omitted.
That would be so interesting - could be many a sci-fi stories created on that premise. Some mechanical robot/starship storing frozen embryos for 100 years to be released on a far-away exoplanet, the starship taking care of them while they grow up and learn how to live on this new world - the beginnings of a new civilization - a technological adam and eve of sorts.
We can’t do lightspeed with the best tech available, so it’s more like 300-400 years probably.
EDIT: To be fair, 1G over 100LY will result in a maximum speed around 0.9998c so I guess you would have to approximately approach light speed for this trip.