Various changes around the map : Lighting, shadows, props and textures. Also decreased BSP size.

Images are a bit outdated and I don't have time to update them.

Hotfix

• Added more corridors to some places. Should allow travelling through areas more freely.
  
• Vents are gone. No more venting.
  
• Added 2 more zspawns.
  
• Added more sigil spots and rooms to travel around.
  
• Sigils are now grouped to prevent crossfire cades.
  
• Changes all around the map including but not limited to : optimization tweaks (tho a bit aggressive imo), decal changes, soundscape changes, sigil room balancing, light tweaks, prop amount tweaks and other non-important small changes around the map)

Initial addon creation.