Implement chest import

itemcontroller.lua

@@ -242,6 +242,14 @@ local PAGES = {
       end,
       function(page)
         state.nextPage = page or state.currentPage
+      end,
+      function()
+        print("Importing...")
+        for _,nodeStack in state.node:find(function(s) return not s:isEmpty() end) do
+          if not state.controller:insertStack(nodeStack) then
+            print("Couldn't find a free slot for: "..(nodeStack:getDisplayName() or nodeStack:getName() or "[EMPTY]"))
+          end
+        end
       end
     )
     state.pageState[state.currentPage] = pageState
@@ -270,6 +278,7 @@ local width, height = monitor.getSize()
 
 local CONTROLLER_STATE = {
   controller = controller,
+  node = accessNode,
   width = width,
   height = height,
   monitor = monitor,