Add cryopod logs (#16854)

Content.Server/Administration/Logs/Converters/GasMixtureStringRepresentationConverter.cs

@@ -0,0 +1,26 @@
+using System.Text.Json;
+using Content.Server.Atmos;
+
+namespace Content.Server.Administration.Logs.Converters;
+
+[AdminLogConverter]
+public sealed class GasMixtureStringRepresentationConverter : AdminLogConverter<GasMixtureStringRepresentation>
+{
+    public override void Write(Utf8JsonWriter writer, GasMixtureStringRepresentation value, JsonSerializerOptions options)
+    {
+        writer.WriteStartObject();
+
+        writer.WriteNumber("mol", value.TotalMoles);
+        writer.WriteNumber("temperature", value.Temperature);
+        writer.WriteNumber("pressure", value.Pressure);
+
+        writer.WriteStartObject("gases");
+        foreach (var x in value.MolesPerGas)
+        {
+            writer.WriteNumber(x.Key, x.Value);
+        }
+        writer.WriteEndObject();
+
+        writer.WriteEndObject();
+    }
+}