Climbing changes (#2236)

Climbing now can't be done if you're already climbing. Rest of the changes are just formatting.

I also removed the buckle messages as they were being duplicated for click-drag.

Co-authored-by: Metal Gear Sloth <metalgearsloth@gmail.com>

Content.Server/GameObjects/Components/Movement/ClimbableComponent.cs

@@ -210,6 +210,9 @@ namespace Content.Server.GameObjects.Components.Movement
 
         private async void TryClimb(IEntity user)
         {
+            if (!user.TryGetComponent(out ClimbingComponent climbingComponent) || climbingComponent.IsClimbing)
+                return;
+
             var doAfterEventArgs = new DoAfterEventArgs(user, _climbDelay, default, Owner)
             {
                 BreakOnTargetMove = true,