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/Pulling/Components/SharedPullerComponent.cs

@@ -1,23 +0,0 @@
-using Robust.Shared.GameStates;
-
-namespace Content.Shared.Pulling.Components
-{
-    [RegisterComponent, NetworkedComponent, AutoGenerateComponentState]
-    [Access(typeof(SharedPullingStateManagementSystem))]
-    public sealed partial class SharedPullerComponent : Component
-    {
-        // Before changing how this is updated, please see SharedPullerSystem.RefreshMovementSpeed
-        public float WalkSpeedModifier => Pulling == default ? 1.0f : 0.95f;
-
-        public float SprintSpeedModifier => Pulling == default ? 1.0f : 0.95f;
-
-        [DataField, AutoNetworkedField]
-        public EntityUid? Pulling { get; set; }
-
-        /// <summary>
-        ///     Does this entity need hands to be able to pull something?
-        /// </summary>
-        [DataField("needsHands")]
-        public bool NeedsHands = true;
-    }
-}