-fix fan push
-updated lighting
-added boss HP on levels 5 and 6

-add zr_toggle_respawn to the admin room

-Fixed light
-Fixed the health of bosses in stages 3 and 6

-Added missing materials

-Added bosshp
-Added new skybox textures
-Added pbr textures
-Fixed item electro
-Fixed item fire
-Fixed item ammo

-Fixed a bug on the elevator
-Fixed the case when the boss disappeared
-Fixed teleports
-Fixed item stopper
-Fixed item electro

-Added missing sounds

-Fix crash client on extreme stages

Created ze_8bit.