Activatable UI component (#5184)

* Transfer most Instrument UI logic to a new component, ActivatableUIComponent

* Move more ActivatableUIComponent stuff to ECS

* ActivatableUI component ignore on client

* ActivatableUI: Get rid of component interfaces where possible

* Add in adminOnly attribute for activatable UIs

This is so that porting #4926 to this will be easier

* Transition Solar Control Computer to ActivatableUI

* Move communications console to ActivatableUI

* Move cargo console to ActivatableUI

* Move ID card console to ActivatableUI

* ActivatableUI: Make things more amiable to entity tests adding components weirdly

* ActivatableUI: Use handling or lack thereof of events properly

* ActivatableUI: component dependency issue resolution stuffs

* ActivatableUISystem: Fix #5258

* More fixes because master did stuffo

* Check for HandDeselectedEvent again because otherwise active-hand check doesn't work

* Move just a bit more code into the system, introduce a workaround for #5258

* Purge the player status detection stuff

* Oh and some obsolete stuff too

Content.Server/Instruments/InstrumentSystem.cs

@@ -1,5 +1,6 @@
 using Content.Shared;
 using Content.Shared.CCVar;
+using Content.Server.UserInterface;
 using JetBrains.Annotations;
 using Robust.Shared.Configuration;
 using Robust.Shared.GameObjects;
@@ -20,6 +21,8 @@ namespace Content.Server.Instruments
             _cfg.OnValueChanged(CCVars.MaxMidiEventsPerBatch, OnMaxMidiEventsPerBatchChanged, true);
             _cfg.OnValueChanged(CCVars.MaxMidiBatchesDropped, OnMaxMidiBatchesDroppedChanged, true);
             _cfg.OnValueChanged(CCVars.MaxMidiLaggedBatches, OnMaxMidiLaggedBatchesChanged, true);
+
+            SubscribeLocalEvent<InstrumentComponent, ActivatableUIPlayerChangedEvent>(InstrumentNeedsClean);
         }
 
         public int MaxMidiEventsPerSecond { get; private set; }
@@ -47,6 +50,11 @@ namespace Content.Server.Instruments
             MaxMidiEventsPerSecond = obj;
         }
 
+        private void InstrumentNeedsClean(EntityUid uid, InstrumentComponent component, ActivatableUIPlayerChangedEvent ev)
+        {
+            component.Clean();
+        }
+
         public override void Update(float frameTime)
         {
             base.Update(frameTime);