https://www.youtube.com/watch?v=LL-rpmIANac
Source code for enabling snap turning for VR in Subnautica
Download the mod here: https://www.nexusmods.com/subnautica/mods/289
Thank you to glibfire for this tutorial on how to create subnautica mods: https://bitbucket.org/glibfire/subnauticamods/src/master/ModdingTutorial/ModdingTutorial.md
The options menu was made easy thanks to SMLHelper. If you want to make changes to the source code, make sure you include the SMLHelper.dll, found in this mod: www.nexusmods.com/subnautica/mods/113
Options menu example was followed from here: https://github.com/QModManager/SMLHelper/blob/2.2.1/Example%20mod/Mod.cs
BepInEx version can be used with MrPurple's famous Vortex multiplayer mod. Just build the snap turning .dll using the BepInEx branch or download from releases page