Added body bag boxes, fixed some folded body bag behavior (#6044)

* Added body bag boxes, fixed some folded body bag behavior

* Added item component to body bags

* Fixed tag

Resources/Prototypes/Entities/Objects/Specific/Medical/morgue.yml

@@ -3,6 +3,8 @@
   name: body bag
   description: A plastic bag designed for the storage and transportation of cadavers.
   components:
+  - type: Item
+    size: 6
   - type: Sprite
     netsync: false
     drawdepth: SmallObjects # I guess body bags need appear above a coroner's table?
@@ -17,6 +19,9 @@
   - type: Icon
     sprite: Objects/Specific/Medical/Morgue/bodybags.rsi
     state: bag
+  - type: Tag
+    tags:
+    - BodyBag
   - type: Clickable
   - type: InteractionOutline
   - type: MovedByPressure