Crew Dragon and Falcon are controlled autonomously. Launch, booster landing, and return into atmosphere are all automated. Only docking is the part where the crew actually has control, but that can be done automatically too. Therefore I don’t see a need for this in Infinite Flight. If you want to see a docking simulation please see the one by SpaceX in a link provided above.
Also it doesn’t seem quite easy to code since airplanes are much simpler than rockets. Anyone can train to fly a plane but not a rocket. You have to keep in mind all if the aspects of a rocket since it is basically a controlled explosion.
However this would be cool if implemented because i recall xPlane 9 having a shuttle docking simulator.