Metabolism refactor (#4395)

* metabolism -> respirator, add reageanteffect and reagenteffectcondition, start on metabolizercomp/system

* move LiverBehavior metabolism logic to Metabolizer

* minor tweaks and update all YAML

* how about actually taking conditions into account

* off by one

* removals

* reviews

Content.Server/Chemistry/ReagentEffects/SatiateThirst.cs

@@ -0,0 +1,28 @@
+using Content.Server.Nutrition.Components;
+using Content.Shared.Chemistry;
+using Content.Shared.Chemistry.Reagent;
+using Content.Shared.Chemistry.Solution;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization.Manager.Attributes;
+
+namespace Content.Server.Chemistry.ReagentEffects
+{
+    /// <summary>
+    /// Default metabolism for drink reagents. Attempts to find a ThirstComponent on the target,
+    /// and to update it's thirst values.
+    /// </summary>
+    public class SatiateThirst : ReagentEffect
+    {
+        /// How much thirst is satiated each metabolism tick. Not currently tied to
+        /// rate or anything.
+        [DataField("hydrationFactor")]
+        public float HydrationFactor { get; set; } = 3.0f;
+
+        /// Satiate thirst if a ThirstComponent can be found
+        public override void Metabolize(IEntity solutionEntity, Solution.ReagentQuantity amount)
+        {
+            if (solutionEntity.TryGetComponent(out ThirstComponent? thirst))
+                thirst.UpdateThirst(HydrationFactor);
+        }
+    }
+}