Librarian gameplay (DND, but in SS14) (#17041)

* D&D character sheets

* Tabletop improvements

* Grass battlemap

* You can now put shit inside of the board

* change variable name

* make the grass tabletop better, again

* update the damn thing AGAIN

* update the shit AGAIN

* You can now take stuff out of tabletops

* Make it use parenting to avoid zany bugs

* MORE battlemaps! Battlemaps for everyone!

* You can now dump out pieces + cleanup

* All (most) non-game pieces should fall to the ground

* make the verb a bit more responsive

* Librarian content officially done

* fix tests i think

* i forgot the sheet

* Smidgen of refactoring

* You can no longer put high risk items inside of boards

* no boardgame defusal

* minor refactoring

* hoplogrma

* doc

* fix rt

Content.Shared/Tabletop/SharedTabletopSystem.cs

@@ -86,6 +86,13 @@ namespace Content.Shared.Tabletop
             }
         }
 
+        [Serializable, NetSerializable]
+        public sealed class TabletopRequestTakeOut : EntityEventArgs
+        {
+            public EntityUid Entity;
+            public EntityUid TableUid;
+        }
+
         #region Utility
 
         /// <summary>