Developer.exe
Its a tool used by the Devs and modders to test the game. It can spawn any amount of any ship, can give all research, resources etc., and even has dozens of commands that will help get better screenshots/recordings in game. I recommend you take the time to go through and read the entire linked guide, or at least the change galaxy and rendering sections, as they will be a big help for you.
Also this isn't really isn't in the game, when recording make sure you enanble cinematic mode and hit ctrl+shift+z to get rid of the UI.
Edit: dang it myfist, you beat me to the link of my own guide.