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.

Resources/Textures/Structures/Power/Generation/teg.rsi/meta.json

@@ -0,0 +1,279 @@
+{
+  "version": 1,
+  "license": "CC-BY-SA-3.0",
+  "copyright": "Taken from https://github.com/Baystation12/Baystation12/blob/fc2196fa74492570e5abb847085afca0e53f4ea8/icons/obj/power.dmi. Modified to split light layers",
+  "size": {
+    "x": 32,
+    "y": 32
+  },
+  "states": [
+    {
+      "name": "teg",
+      "directions": 4
+    },
+    {
+      "name": "teg-op1",
+      "directions": 4
+    },
+    {
+      "name": "teg-op2",
+      "directions": 4
+    },
+    {
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+    {
+      "name": "teg-op4",
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+    {
+      "name": "teg-op5",
+      "directions": 4
+    },
+    {
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+      "directions": 4
+    },
+    {
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+    {
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+      "directions": 4
+    },
+    {
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+      "directions": 4
+    },
+    {
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+    },
+    {
+      "name": "teg-op11",
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+    },
+    {
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+        ]
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+    },
+    {
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+    }
+  ]
+}