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.Client/Examine/ExamineSystem.cs

@@ -359,6 +359,9 @@ namespace Content.Client.Examine
                     _idCounter = 0;
                 RaiseNetworkEvent(new ExamineSystemMessages.RequestExamineInfoMessage(entity, _idCounter, true));
             }
+
+            RaiseLocalEvent(entity, new ClientExaminedEvent(entity, playerEnt.Value));
+
             _lastExaminedEntity = entity;
         }
 
@@ -384,4 +387,26 @@ namespace Content.Client.Examine
             }
         }
     }
+
+    /// <summary>
+    /// An entity was examined on the client.
+    /// </summary>
+    public sealed class ClientExaminedEvent : EntityEventArgs
+    {
+        /// <summary>
+        ///     The entity performing the examining.
+        /// </summary>
+        public readonly EntityUid Examiner;
+
+        /// <summary>
+        ///     Entity being examined, for broadcast event purposes.
+        /// </summary>
+        public readonly EntityUid Examined;
+
+        public ClientExaminedEvent(EntityUid examined, EntityUid examiner)
+        {
+            Examined = examined;
+            Examiner = examiner;
+        }
+    }
 }