Add radio jammer (#14369)

Content.Server/Radio/Components/ActiveRadioJammerComponent.cs

@@ -0,0 +1,12 @@
+using Content.Server.Radio.EntitySystems;
+
+namespace Content.Server.Radio.Components;
+
+/// <summary>
+/// Prevents all radio in range from sending messages
+/// </summary>
+[RegisterComponent]
+[Access(typeof(JammerSystem))]
+public sealed class ActiveRadioJammerComponent : Component
+{
+}