Pressure & volume pumps can be toggled on/off now. (#3046)

This tidbit might or might not be suitable for a separate component.
Tell me in PR comments I guess.

Content.Server/GameObjects/Components/Atmos/Piping/Pumps/BasePumpComponent.cs

@@ -4,6 +4,7 @@ using Content.Server.Atmos;
 using Content.Server.GameObjects.Components.NodeContainer;
 using Content.Server.GameObjects.Components.NodeContainer.Nodes;
 using Content.Shared.GameObjects.Components.Atmos;
+using Content.Shared.Interfaces.GameObjects.Components;
 using Robust.Server.GameObjects;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Interfaces.GameObjects;
@@ -16,7 +17,7 @@ namespace Content.Server.GameObjects.Components.Atmos.Piping.Pumps
     /// <summary>
     ///     Transfer gas from one <see cref="PipeNode"/> to another.
     /// </summary>
-    public abstract class BasePumpComponent : Component
+    public abstract class BasePumpComponent : Component, IActivate
     {
         /// <summary>
         ///     If the pump is currently pumping.
@@ -100,6 +101,11 @@ namespace Content.Server.GameObjects.Components.Atmos.Piping.Pumps
             _appearance?.SetData(PumpVisuals.VisualState, new PumpVisualState(_initialInletDirection, _initialOutletDirection, PumpEnabled));
         }
 
+        public void Activate(ActivateEventArgs eventArgs)
+        {
+            PumpEnabled = !PumpEnabled;
+        }
+
         private void SetPipes()
         {
             _inletPipe = null;

Content.Server/GameObjects/Components/Atmos/Piping/Pumps/PressurePumpComponent.cs

@@ -1,6 +1,7 @@
 #nullable enable
 using System;
 using Content.Server.Atmos;
+using Content.Shared.Interfaces.GameObjects.Components;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
@@ -9,6 +10,7 @@ namespace Content.Server.GameObjects.Components.Atmos.Piping.Pumps
 {
     [RegisterComponent]
     [ComponentReference(typeof(BasePumpComponent))]
+    [ComponentReference(typeof(IActivate))]
     public class PressurePumpComponent : BasePumpComponent
     {
         public override string Name => "PressurePump";

Content.Server/GameObjects/Components/Atmos/Piping/Pumps/VolumePumpComponent.cs

@@ -1,6 +1,7 @@
 #nullable enable
 using System;
 using Content.Server.Atmos;
+using Content.Shared.Interfaces.GameObjects.Components;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization;
 using Robust.Shared.ViewVariables;
@@ -9,6 +10,7 @@ namespace Content.Server.GameObjects.Components.Atmos.Piping.Pumps
 {
     [RegisterComponent]
     [ComponentReference(typeof(BasePumpComponent))]
+    [ComponentReference(typeof(IActivate))]
     public class VolumePumpComponent : BasePumpComponent
     {
         [ViewVariables(VVAccess.ReadWrite)]