Add haloperidol, potassium iodide (#27454)

* add haloperidol, potassium iodide

* review fixes

* review and tuning

* shader review

* use timespan and AutoPausedField

Content.Shared/Damage/Systems/DamageProtectionBuffSystem.cs

@@ -0,0 +1,19 @@
+using Content.Shared.Damage.Components;
+
+namespace Content.Shared.Damage.Systems;
+
+public sealed class DamageProtectionBuffSystem : EntitySystem
+{
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<DamageProtectionBuffComponent, DamageModifyEvent>(OnDamageModify);
+    }
+
+    private void OnDamageModify(EntityUid uid, DamageProtectionBuffComponent component, DamageModifyEvent args)
+    {
+        foreach (var modifier in component.Modifiers.Values)
+            args.Damage = DamageSpecifier.ApplyModifierSet(args.Damage, modifier);
+    }
+}