Add Alt-click functionality (#4497)

* Fix ItemSlot Bug

* Add Alt-use Key

* Fix TransferAmount window bug

* Alt-click functionality

* Added AltInteract verbs

* Add new verbs

* verb icons

* Changed Comments

* Change Comments

* Fix disposal verbs

* Changed Get...() to Get...OrNull()

* Changed alt-interact combat behaviour

* Update verb icons

* Inventory interact event

* Add Alt+E secondary binding

* Add alt-z keybinding

* Rename AltUse -> AltActivateItemInWorld

Content.Server/Climbing/Components/ClimbableComponent.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using Content.Server.DoAfter;
 using Content.Server.Notification;
 using Content.Shared.ActionBlocker;
@@ -242,6 +242,8 @@ namespace Content.Server.Climbing.Components
         [Verb]
         private sealed class ClimbVerb : Verb<ClimbableComponent>
         {
+            public override bool AlternativeInteraction => true;
+
             protected override void GetData(IEntity user, ClimbableComponent component, VerbData data)
             {
                 if (!component.CanVault(user, component.Owner, out var _))