Uplink UI icons and withdraw button (#4929)

* Uplink menu has icons now

* Add item icons

* Add few descriptions

* Better withdraw window

* Finished with withdraw window

* Refactored withdraw ui and fix some bugs

* Basic withdraw

* Quick fixes

* Removed uplink listing for TCs

* Move slider to separate control

* Final touches

* A bit more

* Not again...

* Fixed names

* Address review

* Fixed robust

* Non necessary check

Content.Shared/Traitor/Uplink/UplinkListingData.cs

@@ -1,6 +1,7 @@
 using Content.Shared.PDA;
 using Robust.Shared.GameObjects;
 using Robust.Shared.Serialization;
+using Robust.Shared.Utility;
 using System;
 
 namespace Content.Shared.Traitor.Uplink
@@ -13,16 +14,18 @@ namespace Content.Shared.Traitor.Uplink
         public readonly UplinkCategory Category;
         public readonly string Description;
         public readonly string ListingName;
+        public readonly SpriteSpecifier? Icon;
 
         public UplinkListingData(string listingName, string itemId,
             int price, UplinkCategory category,
-            string description)
+            string description, SpriteSpecifier? icon)
         {
             ListingName = listingName;
             Price = price;
             Category = category;
             Description = description;
             ItemId = itemId;
+            Icon = icon;
         }
 
         public bool Equals(UplinkListingData? other)

Content.Shared/Traitor/Uplink/UplinkMessagesUI.cs

@@ -23,4 +23,15 @@ namespace Content.Shared.Traitor.Uplink
 
         }
     }
+
+    [Serializable, NetSerializable]
+    public sealed class UplinkTryWithdrawTC : BoundUserInterfaceMessage
+    {
+        public int TC;
+
+        public UplinkTryWithdrawTC(int tc)
+        {
+            TC = tc;
+        }
+    }
 }