more expedition changes (#17403)

Co-authored-by: deltanedas <@deltanedas:kde.org>
Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Shared/Salvage/Expeditions/Modifiers/SalvageTemperatureMod.cs

@@ -0,0 +1,27 @@
+using Robust.Shared.Prototypes;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype.List;
+
+namespace Content.Shared.Salvage.Expeditions.Modifiers;
+
+[Prototype("salvageTemperatureMod")]
+public sealed class SalvageTemperatureMod : IPrototype, IBiomeSpecificMod
+{
+    [IdDataField] public string ID { get; } = default!;
+
+    [DataField("desc")] public string Description { get; } = string.Empty;
+
+    /// <inheritdoc/>
+    [DataField("cost")]
+    public float Cost { get; } = 0f;
+
+    /// <inheritdoc/>
+    [DataField("biomes", customTypeSerializer: typeof(PrototypeIdListSerializer<SalvageBiomeMod>))]
+    public List<string>? Biomes { get; } = null;
+
+    /// <summary>
+    /// Temperature in the planets air mix.
+    /// </summary>
+    [DataField("temperature")]
+    public float Temperature = 293.15f;
+}