Adds barotrauma (pressure damage) (#1605)

* Adds barotrauma, disables it for now

* At least show status effect, but don't damage the mobs

* Fix switch misuse

Content.Server/GameObjects/Components/Atmos/PressureProtectionComponent.cs

@@ -0,0 +1,27 @@
+using Content.Server.Interfaces.GameObjects;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization;
+using Robust.Shared.ViewVariables;
+
+namespace Content.Server.GameObjects.Components.Atmos
+{
+    [RegisterComponent]
+    public class PressureProtectionComponent : Component, IPressureProtection
+    {
+        public override string Name => "PressureProtection";
+
+        [ViewVariables]
+        public float HighPressureMultiplier { get; private set; }
+
+        [ViewVariables]
+        public float LowPressureMultiplier { get; private set; }
+
+        public override void ExposeData(ObjectSerializer serializer)
+        {
+            base.ExposeData(serializer);
+
+            serializer.DataField(this, x => HighPressureMultiplier, "highPressureMultiplier", 1f);
+            serializer.DataField(this, x => LowPressureMultiplier, "lowPressureMultiplier", 1f);
+        }
+    }
+}