Mortician's Menagerie (#2391)

* Body bags!

* Morgue Trays and the Crematorium!
Reorganised body bags to be under Morgue, not Medical

* Fix. Things outside of EntityStorageComponents now use the Try*Storage() not just *Storage() methods - Allows mobs to be trapped in a morgue/crematorium whose tray can't open.

* Fix tests. Modernise component dependency and nullability.

* Update Content.Server/GameObjects/Components/Morgue/MorgueTrayComponent.cs

Co-authored-by: Víctor Aguilera Puerto <6766154+Zumorica@users.noreply.github.com>

Content.Client/GameObjects/Components/Morgue/BodyBagVisualizer.cs

@@ -0,0 +1,30 @@
+#nullable enable
+using Content.Shared.GameObjects.Components.Morgue;
+using Robust.Client.GameObjects;
+using Robust.Client.Interfaces.GameObjects.Components;
+
+namespace Content.Client.GameObjects.Components.Morgue
+{
+    public sealed class BodyBagVisualizer : AppearanceVisualizer
+    {
+        public override void OnChangeData(AppearanceComponent component)
+        {
+            base.OnChangeData(component);
+
+            if (!component.Owner.TryGetComponent(out ISpriteComponent? sprite))
+            {
+                return;
+            }
+
+            if (component.TryGetData(BodyBagVisuals.Label, out bool labelVal))
+            {
+                sprite.LayerSetVisible(BodyBagVisualLayers.Label, labelVal);
+            }
+        }
+    }
+
+    public enum BodyBagVisualLayers
+    {
+        Label,
+    }
+}