Game needs Fast Travel or "Return to Mantis" options

@irunsolothat's fine and dandy but it's an awful way to increase play time when there's bugs that allow you to get stuck in places with no way out. So many posts of people having to restart the game because of these issues - being able to return to Mantis would fix this.  Besides, even if you factored out travel, there's a solid 30 hours of exploration to do for 100% no need to pad out 10 more hours of walking back to the ship.