Remove LungBehavior and replace with LungComponent/System (#5630)

Content.Server/Body/Components/LungComponent.cs

@@ -0,0 +1,44 @@
+using System;
+using Content.Server.Atmos;
+using Content.Server.Body.Systems;
+using Content.Shared.Atmos;
+using Robust.Shared.Analyzers;
+using Robust.Shared.GameObjects;
+using Robust.Shared.Serialization.Manager.Attributes;
+using Robust.Shared.ViewVariables;
+
+namespace Content.Server.Body.Components;
+
+[RegisterComponent, Friend(typeof(LungSystem))]
+public class LungComponent : Component
+{
+    public override string Name => "Lung";
+
+    public float AccumulatedFrametime;
+
+    [ViewVariables]
+    public TimeSpan LastGaspPopupTime;
+
+    [DataField("air")]
+    public GasMixture Air { get; set; } = new()
+    {
+        Volume = 6,
+        Temperature = Atmospherics.NormalBodyTemperature
+    };
+
+    [DataField("gaspPopupCooldown")]
+    public TimeSpan GaspPopupCooldown { get; private set; } = TimeSpan.FromSeconds(8);
+
+    [ViewVariables]
+    public LungStatus Status { get; set; }
+
+    [DataField("cycleDelay")]
+    public float CycleDelay { get; set; } = 2;
+}
+
+public enum LungStatus
+{
+    None = 0,
+    Inhaling,
+    Exhaling
+}