Climbing system (#1750)

* Initial commit

* Climbing uses its own controller now

* Missed a check

* Get rid of hands check

* Cleanup

* Get rid of speciescomponent stuff

* Remove unneeded check, add separate case for moving other players.

* Add DoAfter

* IClientDraggable added to ClimbingComponent

* Added some basic integration tests. Renamed ClimbMode to Climbing.

* oops

* Minor fixes

* ffff

* Table fix

* Revamped system so its more predicted, uses proper  logic for de-climbing. Get hype!!!

* Flag check fix

* Distance check and reset numticksblocked

* get rid

Content.Server/GameObjects/EntitySystems/ClimbSystem.cs

@@ -0,0 +1,18 @@
+using Content.Server.GameObjects.Components.Movement;
+using JetBrains.Annotations;
+using Robust.Shared.GameObjects.Systems;
+
+namespace Content.Server.GameObjects.EntitySystems
+{
+    [UsedImplicitly]
+    internal sealed class ClimbSystem : EntitySystem
+    {
+        public override void Update(float frameTime)
+        {
+            foreach (var comp in ComponentManager.EntityQuery<ClimbingComponent>())
+            {
+                comp.Update(frameTime);
+            }
+        }
+    }
+}