[MIRROR] Makes fire colorful and anime (#5187)

* Makes fire colorful and anime (#34977)

* - Makes fire colorful and anime

* - Updates light color on fires
- Makes fire update color less often (1/7th as often)

* - Changes the transition from blue to purple to be much more gradual, it starts at 40000 and peaks at 120000 Kelvin now
- Changes fusion fire (>4 million Kelvin) to have a slight colorshift to it (It's just the druggy overlay).

* - Moves fire above gas (and everything else)
- Changes fire alpha for low temperature fires to compensate for items no longer rendering on top of fire

* - Makes the new fire layer a define and makes sure it isn't above "Hyperspace Ripples" whatever that is

* - Removes comment

* - FIRE_LAYER is already defined for burning humans.

* Makes fire colorful and anime

code/__DEFINES/layers.dm

@@ -62,6 +62,7 @@
 #define SPACEVINE_LAYER 4.8
 #define SPACEVINE_MOB_LAYER 4.9
 //#define FLY_LAYER 5 //For easy recordkeeping; this is a byond define
+#define GASFIRE_LAYER 5.05
 #define RIPPLE_LAYER 5.1
 
 #define GHOST_LAYER 6