IListener and IRadio purge (#11980)

Content.Server/Radio/Components/WearingHeadsetComponent.cs

@@ -0,0 +1,13 @@
+using Content.Server.Radio.EntitySystems;
+
+namespace Content.Server.Radio.Components;
+
+/// <summary>
+///     This component is used to tag players that are currently wearing an ACTIVE headset.
+/// </summary>
+[RegisterComponent]
+public sealed class WearingHeadsetComponent : Component
+{
+    [DataField("headset")]
+    public EntityUid Headset;
+}