Vivecraft is a VR mod for Minecraft Java however to play online you need to download a plugin for it. I have seen a post for this before but the reasoning for not including it was due to it not being updated to 1.14.3 however now there is a 1.14.3 plugin version for spigot which can be found here https://github.com/jrbudda/Vivecraft_Spigot_Extensions/releases I hope that this plugin could be added soon.