SAS on Multiple Crafts Simultaneously

Allow multiple crafts to hold heading prograde, retrograde, or towards target to improve docking.
Example: Craft 1 targets a docking port on craft 2 and holds heading pointing directly at it. Player switches to craft 2. Craft 2 targets a docking port on craft 1 and holds heading pointing at it. Craft two translates forward and the two craft maintain pointing at each other's docking ports regardless of lateral or horizontal movement and drift together without further input.