SCPCBIrrlicht - SCP-178-1

I recently switched to a WIP branch of Irrlicht, which adds custom vertex formats and several improvements to handling shaders in general, which allowed me to add hardware skinning easily. This video only shows SCP-178-1's new idle behavior since the aggressive state is very similar to SCP-096. Also, keycards are automatically equipped if the player has them in their inventory now.