Version 0.0.51

Version 0.0.51

- Removed interact hand icons
- Added PBR materials for many of the SCP-CB textures
- Added a cooldown to the intercom
- Fixed up voice chat a bit
- Removed the debugging test dummy by the escape area
- Changed a bunch of lighting in Light Containment Zone
- Fix lower screen resolutions lowering mouse sensitivity
- Made SCP footsteps louder
- Added a new keycard model and textures
- Added a WIP ammo counter when a weapon is held