Move entity effects definitions to shared (#35614)

* Move entity effects to shared

* relocate spawning to server

* Generic version of EntityEffect for just raising event.

* genericise everything

* oops forgot to push you

* some condensation

* finish rebas

* unwhite the space

* oops forgot nuke

* bad rebase fix

* useless annotations begone

---------

Co-authored-by: EmoGarbage404 <retron404@gmail.com>

Content.Shared/EntityEffects/EventEntityEffect.cs

@@ -0,0 +1,12 @@
+namespace Content.Shared.EntityEffects;
+
+public abstract partial class EventEntityEffect<T> : EntityEffect where T : EntityEffect
+{
+    public override void Effect(EntityEffectBaseArgs args)
+    {
+        if (this is not T type)
+            return;
+        var ev = new ExecuteEntityEffectEvent<T>(type, args);
+        args.EntityManager.EventBus.RaiseEvent(EventSource.Local, ref ev);
+    }
+}