Adds the thermo-electric generator (#18840)

* Basic TEG start.

Connects via node group.

* Basic TEG test map

* Sensor monitoring basics, TEG circulator flow

* Basic power generation (it doesn't work)

* More sensor monitoring work

* Battery (SMES) monitoring system.

* Sensor monitoring fixes

Make it work properly when mapped.

* Test map improvements

* Revise TEG power output mechanism.

Now uses a fixed supplier with a custom ramping system.

* TEG test map fixes

* Make air alarms and pumps open UI on activate.

* Clean up thermo machines power switch.

Removed separate Enabled bool from the component that always matched the power receiver's state.

This enables adding a PowerSwitch component to give us alt click/verb menu.

* TEG but now fancy

* Make sensor monitoring console obviously WiP to mappers.

* Vending machine sound, because of course.

* Terrible, terrible graph background color

* Examine improvements for the TEG.

* Account for electrical power when equalizing gas mixtures.

* Get rid of the TegCirculatorArrow logic.

Use TimedDespawn instead. The "no show in right-click menuu" goes into a new general-purpose component.

Thanks Julian.

* Put big notice of "not ready, here's why" on the sensor monitoring console.

* TryGetComponent -> TryComp

* Lol there's a HideContextMenu tag

* Test fixes

* Guidebook for TEG

Fixed rotation on GuideEntityEmbed not working correctly.

Added Margin property to GuideEntityEmbed

* Make TEG power bar default to invisible.

So it doesn't appear in the guidebook and spawn menu.

Content.Shared/SensorMonitoring/SharedSensorMonitoringConsoleComponent.cs

@@ -0,0 +1,112 @@
+using Robust.Shared.Serialization;
+using ConsoleUIState = Content.Shared.SensorMonitoring.SensorMonitoringConsoleBoundInterfaceState;
+
+namespace Content.Shared.SensorMonitoring;
+
+[Serializable, NetSerializable]
+public sealed class SensorMonitoringConsoleBoundInterfaceState : BoundUserInterfaceState
+{
+    public TimeSpan RetentionTime;
+    public SensorData[] Sensors = Array.Empty<SensorData>();
+
+    [Serializable, NetSerializable]
+    public sealed class SensorData
+    {
+        public int NetId;
+        public string Name = "";
+        public string Address = "";
+        public SensorDeviceType DeviceType;
+
+        public SensorStream[] Streams = Array.Empty<SensorStream>();
+    }
+
+    [Serializable, NetSerializable]
+    public sealed class SensorStream
+    {
+        public int NetId;
+        public string Name = "";
+        public SensorUnit Unit;
+        public SensorSample[] Samples = Array.Empty<SensorSample>();
+    }
+}
+
+[Serializable, NetSerializable]
+public sealed class SensorMonitoringIncrementalUpdate : BoundUserInterfaceMessage
+{
+    public TimeSpan RelTime;
+    public SensorData[] Sensors = Array.Empty<SensorData>();
+    public int[] RemovedSensors = Array.Empty<int>();
+
+    [Serializable, NetSerializable]
+    public sealed class SensorData
+    {
+        public int NetId;
+        public SensorStream[] Streams = Array.Empty<SensorStream>();
+    }
+
+    [Serializable, NetSerializable]
+    public sealed class SensorStream
+    {
+        public int NetId;
+        public SensorUnit Unit;
+        // Note: these samples have their time values relative to RelTime.
+        // This improves effectiveness of integer compression in NetSerializer.
+        public SensorSample[] Samples = Array.Empty<SensorSample>();
+    }
+}
+
+[Serializable, NetSerializable]
+public enum SensorMonitoringConsoleUiKey
+{
+    Key
+}
+
+[Serializable, NetSerializable]
+public enum SensorUnit : byte
+{
+    Undetermined = 0,
+
+    /// <summary>
+    /// A pressure value in kilopascals (kPa).
+    /// </summary>
+    PressureKpa,
+
+    /// <summary>
+    /// A temperature value in Kelvin (K).
+    /// </summary>
+    TemperatureK,
+
+    /// <summary>
+    /// An amount of matter in moles.
+    /// </summary>
+    Moles,
+
+    /// <summary>
+    /// A value in the range 0-1.
+    /// </summary>
+    /* L + */ Ratio,
+
+    /// <summary>
+    /// Power in Watts (W).
+    /// </summary>
+    PowerW,
+
+    /// <summary>
+    /// Energy in Joules (J).
+    /// </summary>
+    EnergyJ
+}
+
+[Serializable, NetSerializable]
+public enum SensorDeviceType
+{
+    Unknown = 0,
+    Teg,
+    AtmosSensor,
+    ThermoMachine,
+    VolumePump,
+    Battery,
+}
+
+[Serializable, NetSerializable]
+public record struct SensorSample(TimeSpan Time, float Value);