Data-oriented Construction System (#2152)

- Powerful
- Data-oriented
- Approved by PJB
- Powered by node graphs and AI pathfinding
- Coded by the same nerd who brought you atmos

Co-authored-by: Exp <theexp111@gmail.com>

Content.Server/GameObjects/EntitySystems/DoAfter/DoAfterSystem.cs

@@ -1,6 +1,7 @@
 #nullable enable
 using System;
 using System.Collections.Generic;
+using System.Linq;
 using System.Threading.Tasks;
 using Content.Server.GameObjects.Components;
 using Content.Shared.GameObjects.Components.Damage;
@@ -27,7 +28,7 @@ namespace Content.Server.GameObjects.EntitySystems.DoAfter
                 var cancelled = new List<DoAfter>(0);
                 var finished = new List<DoAfter>(0);
 
-                foreach (var doAfter in comp.DoAfters)
+                foreach (var doAfter in comp.DoAfters.ToArray())
                 {
                     doAfter.Run(frameTime);