Grid Inventory (#21931)

* Grid Inventory

* oh boy we keep cracking on

* auto insertion is kinda working? gross, too!

* pieces and proper layouts

* fix the sprites

* mousing over grid pieces... finally

* dragging deez nuts all over the screen

* eek!

* dragging is 90% less horrendous

* auto-rotating

* flatten

* Rotation at last

* fix rotation and change keybind for removing items.

* rebinding and keybinding

* wow! look at that! configurable with a button! cool!

* dragging is a bit cooler, eh?

* hover insert, my beloved

* add some grids for storage, fix 1x1 storages, fix multiple inputs at once

* el navigation

* oh yeah some stuff i forgor

* more fixes and QOL stuff

* the griddening

* the last of it (yippee)

* sloth review :)

Content.Server/Chemistry/EntitySystems/ChemMasterSystem.cs

@@ -355,7 +355,7 @@ namespace Content.Server.Chemistry.EntitySystems
                 return (Name(pill), quantity);
             })).ToList();
 
-            return new ContainerInfo(name, _storageSystem.GetCumulativeItemSizes(container.Value, storage), storage.MaxTotalWeight)
+            return new ContainerInfo(name, _storageSystem.GetCumulativeItemAreas((container.Value, storage)), storage.Grid.GetArea())
             {
                 Entities = pills
             };