Pulling rework (#20906)

* Pulling rework

Fixing up the FOUR systems managing pulling, all the shitcode, and also making it nicer ingame.

* More pulling cleanup

* stats

* More cleanup

* First draft

* More pulling

* weh

* Fix puller

* Pulling working

* Fix merge

* Dunked

* Self-merge time

Content.Shared/Movement/Pulling/Events/AttemptPullEvent.cs

@@ -0,0 +1,13 @@
+using Robust.Shared.Physics.Components;
+
+namespace Content.Shared.Movement.Pulling.Events;
+
+/// <summary>
+/// Raised directed on puller and pullable to determine if it can be pulled.
+/// </summary>
+public sealed class PullAttemptEvent : PullMessage
+{
+    public PullAttemptEvent(EntityUid pullerUid, EntityUid pullableUid) : base(pullerUid, pullableUid) { }
+
+    public bool Cancelled { get; set; }
+}