The tool you're looking for is EDISON which provides both proper compass heading and attitude adjustment guidance via voice and screen overlay.
Hello Commanders, I have created a tool, which helps with navigating to coordinates/waypoints. 01/08/2019: Version 5.1 beta available Features: Guidance to planetary waypoints using an overlay and voice output. HUD overlay color is customizable. Automatically fetch planets radius from...
forums.frontier.co.uk
You still have to pilot the ship so while it's a useful tool, it is by no means an Autopilot.
However, after you do a few dozen landings on planets, you'll generally find that your piloting skills will take over and you won't need EDISON. Where EDISON really shines is in managing personal waypoints that are not necessarily visible from greater than 10-20LS from the planetary surface. I use it to mark areas that I may have noted as being photo-worthy and may want to visit later on.