Forum user @Diazo made this a while ago, but he hasn't been around in almost a year, so I'm adopting it. Original thread is here: https://forum.kerbalspaceprogram.com/index.php?/topic/77486-13jan2817-landing-aid-kill-your-horizontal-velocity-to-land-now-optionally-using-rcs/&
Kill your horizontal velocity before landing, or hover over a selected point on the ground.
Availability
Source: https://github.com/linuxgurugamer/RCSLandAid
Download: https://spacedock.info/mod/