Hardsuits Fire Protection (#1445)

# Description

I have incredibly vivid memories from SS13 over a decade ago. In
particular, every time the Supermatter delaminated, one of the Engineers
would inevitably end up heroically sacrificing themself by walking
directly into the supermatter core in order to drag the crystal to
space. This was made only possible because the engineering suits made
you immune to fire damage. It's currently not possible for engineers to
do this, since fire damage is ABSURD, and having an 80% reduction to 400
damage per second is still death in less than 3 seconds.

So this PR corrects the injustice. Now the chief engineer gets to
heroically sacrifice himself by dragging the supermatter crystal out to
space.

# Changelog

:cl:
- add: Engineering Hardsuits, Maxim Hardsuit, and Cybersun's Elite
Tacsuit now all make the wearer immune to atmos fires. Have fun walking
directly into the supermatter engine. Play out your heroic engineer
fantasy by dragging the supermatter crystal to space in order to save
the station.

---------

Co-authored-by: sleepyyapril <[email protected]>

Resources/Prototypes/Entities/Clothing/OuterClothing/hardsuits.yml

@@ -44,6 +44,8 @@
     lowPressureMultiplier: 1000
   - type: TemperatureProtection
     coefficient: 0.001
+  - type: FireProtection
+    reduction: 1
   - type: ExplosionResistance
     damageCoefficient: 0.5
   - type: Armor
@@ -98,6 +100,10 @@
     coefficient: 0.75 # 25%
   - type: GuideHelp
     guides: [ HephaestusIndustries ]
+  - type: TemperatureProtection
+    coefficient: 0.001
+  - type: FireProtection
+    reduction: 1
 
 #Spationaut Hardsuit
 - type: entity
@@ -225,6 +231,8 @@
     damageCoefficient: 0.2
   - type: TemperatureProtection
     coefficient: 0.001
+  - type: FireProtection
+    reduction: 1
   - type: ToggleableClothing
     clothingPrototype: ClothingHeadHelmetHardsuitMaxim
   - type: GuideHelp
@@ -397,6 +405,10 @@
     coefficient: 0.65 # 35%
   - type: GuideHelp
     guides: [ HephaestusIndustries ]
+  - type: TemperatureProtection
+    coefficient: 0.001
+  - type: FireProtection
+    reduction: 1
 
 #Chief Medical Officer's Hardsuit
 - type: entity
@@ -622,7 +634,7 @@
   - type: ExplosionResistance
     damageCoefficient: 0.2
   - type: FireProtection
-    reduction: 0.8 # perfect protection like atmos firesuit for pyro tf2 ops
+    reduction: 1 # perfect protection like atmos firesuit for pyro tf2 ops
   - type: Armor
     modifiers:
       coefficients:
@@ -890,6 +902,10 @@
     clothingPrototype: ClothingHeadHelmetHardsuitERTEngineer
   - type: StaminaDamageResistance
     coefficient: 0.5 # 50%
+  - type: TemperatureProtection
+    coefficient: 0.001
+  - type: FireProtection
+    reduction: 1
 
 #ERT Medic Hardsuit
 - type: entity