QoL: ability to leave the name of celestial body as it was when colonizing.

[Cosmic Fishering Fleet]

While for most planets and other celestial bodies it is not so relevant (Sol III and Sol IV and other [star][orbit] names), there are some unique systems that already have names, like Walled Garden or Ruinous Core or Zanaam. For now, if you want to preserve their names, you need to manually type it. I propose that "Name a colony" window had the option to leave the name of a planet as is.