Add chem solution atmos heating and cooling (#17854)

Content.Server/Chemistry/Components/SolutionManager/SolutionGasHeatConductivityComponent.cs

@@ -0,0 +1,22 @@
+namespace Content.Server.Chemistry.Components.SolutionManager;
+
+/// <summary>
+/// Lets the solution conduct heat to/from atmos gases.
+/// </summary>
+[RegisterComponent]
+public sealed class SolutionGasHeatConductivityComponent : Component
+{
+    /// <summary>
+    /// Solution that conducts heat.
+    /// </summary>
+    [ViewVariables(VVAccess.ReadWrite)]
+    [DataField("solution")]
+    public string Solution { get; set; } = "default";
+
+    /// <summary>
+    /// The heat conductivity between the gas and solution.
+    /// </summary>
+    [ViewVariables(VVAccess.ReadWrite)]
+    [DataField("wattsPerKelvin")]
+    public float WattsPerKelvin = 1;
+}