Revert "Revert "Emp more effects" (#16159)" (#16165)

This reverts commit 0da5a78509.

Content.Shared/Emp/SharedEmpSystem.cs

@@ -0,0 +1,10 @@
+using Robust.Shared.Timing;
+
+namespace Content.Shared.Emp;
+
+public abstract class SharedEmpSystem : EntitySystem
+{
+    [Dependency] protected readonly IGameTiming Timing = default!;
+
+    protected const string EmpDisabledEffectPrototype = "EffectEmpDisabled";
+}