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/EntityEffect.cs

@@ -89,6 +89,19 @@ public static class EntityEffectExt
     }
 }
 
+[ByRefEvent]
+public struct ExecuteEntityEffectEvent<T> where T : EntityEffect
+{
+    public T Effect;
+    public EntityEffectBaseArgs Args;
+
+    public ExecuteEntityEffectEvent(T effect, EntityEffectBaseArgs args)
+    {
+        Effect = effect;
+        Args = args;
+    }
+}
+
 /// <summary>
 ///     EntityEffectBaseArgs only contains the target of an effect.
 ///     If a trigger wants to include more info (e.g. the quantity of the chemical triggering the effect), it can be extended (see EntityEffectReagentArgs).