March update #2

[list] [*]Revert depth buffer submission as it was not working properly with Oculus runtimes [*]Revert NPC weapon sound updates as they were causing missing sounds [*]Fix soft particle rendering artifacts [*]Automatically crouch player when teleporting into tight spaces [*]Adjust crouch view offset to give more consistent results when activating toggle crouch while partially physically crouched [*]Fix Grigori never sending the cart if you teleport up the ladder to the roof [*]Ensure all required Vulkan extensions are enabled even if SteamVR isn't already running when starting the game [/list]