Device Linking and better linking ui (#13645)

Co-authored-by: AJCM-git <60196617+AJCM-git@users.noreply.github.com>
Co-authored-by: Visne <39844191+Visne@users.noreply.github.com>
Co-authored-by: ElectroJr <leonsfriedrich@gmail.com>
Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Server/DeviceLinking/Systems/SignalSwitchSystem.cs

@@ -0,0 +1,40 @@
+using Content.Server.DeviceLinking.Components;
+using Content.Server.MachineLinking.System;
+using Content.Shared.Audio;
+using Content.Shared.Interaction;
+using Robust.Shared.Audio;
+using Robust.Shared.Player;
+
+namespace Content.Server.DeviceLinking.Systems
+{
+    public sealed class SignalSwitchSystem : EntitySystem
+    {
+        [Dependency] private readonly DeviceLinkSystem _signalSystem = default!;
+
+        public override void Initialize()
+        {
+            base.Initialize();
+
+            SubscribeLocalEvent<SignalSwitchComponent, ComponentInit>(OnInit);
+            SubscribeLocalEvent<SignalSwitchComponent, ActivateInWorldEvent>(OnActivated);
+        }
+
+        private void OnInit(EntityUid uid, SignalSwitchComponent component, ComponentInit args)
+        {
+            _signalSystem.EnsureSourcePorts(uid, component.OnPort, component.OffPort);
+        }
+
+        private void OnActivated(EntityUid uid, SignalSwitchComponent component, ActivateInWorldEvent args)
+        {
+            if (args.Handled)
+                return;
+
+            component.State = !component.State;
+            _signalSystem.InvokePort(uid, component.State ? component.OnPort : component.OffPort);
+            SoundSystem.Play(component.ClickSound.GetSound(), Filter.Pvs(component.Owner), component.Owner,
+                AudioHelpers.WithVariation(0.125f).WithVolume(8f));
+
+            args.Handled = true;
+        }
+    }
+}