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.Client/Changelog/ChangelogWindow.xaml.cs

@@ -1,4 +1,4 @@
-using System;
+using System;
 using System.Linq;
 using Content.Client.Resources;
 using Content.Client.Stylesheets;