Storage system refactor & map init.

* Demonstrated map init working with guns, toolboxes, tool lockers.
* Refactored EntityStorage and ServerStorage to have a common interface.
* EntityStorage no longer uses ServerStorage PURELY for visuals.
  Use an appearance visualizer instead.

Content.Server/GameObjects/Components/Items/Storage/ServerStorageComponent.cs

@@ -18,6 +18,7 @@ using Robust.Shared.GameObjects.EntitySystemMessages;
 using Robust.Shared.Interfaces.Map;
 using Robust.Shared.ViewVariables;
 using Content.Server.GameObjects.Components;
+using Content.Server.GameObjects.Components.Items.Storage;
 using Robust.Server.GameObjects.EntitySystemMessages;
 
 namespace Content.Server.GameObjects
@@ -25,7 +26,7 @@ namespace Content.Server.GameObjects
     /// <summary>
     /// Storage component for containing entities within this one, matches a UI on the client which shows stored entities
     /// </summary>
-    public class ServerStorageComponent : SharedStorageComponent, IAttackBy, IUse, IActivate
+    public class ServerStorageComponent : SharedStorageComponent, IAttackBy, IUse, IActivate, IStorageComponent
     {
 #pragma warning disable 649
         [Dependency] private readonly IMapManager _mapManager;
@@ -40,20 +41,6 @@ namespace Content.Server.GameObjects
         private int StorageCapacityMax = 10000;
         public HashSet<IPlayerSession> SubscribedSessions = new HashSet<IPlayerSession>();
 
-        [ViewVariables(VVAccess.ReadWrite)]
-        public bool Open
-        {
-            get => _open;
-            set
-            {
-                if (_open == value)
-                    return;
-
-                _open = value;
-                Dirty();
-            }
-        }
-
         public override void Initialize()
         {
             base.Initialize();
@@ -61,12 +48,6 @@ namespace Content.Server.GameObjects
             storage = ContainerManagerComponent.Ensure<Container>("storagebase", Owner);
         }
 
-        /// <inheritdoc />
-        public override ComponentState GetComponentState()
-        {
-            return new StorageComponentState(_open);
-        }
-
         public override void ExposeData(ObjectSerializer serializer)
         {
             base.ExposeData(serializer);
@@ -243,7 +224,10 @@ namespace Content.Server.GameObjects
 
         private void UpdateDoorState()
         {
-            Open = SubscribedSessions.Count != 0;
+            if (Owner.TryGetComponent(out AppearanceComponent appearance))
+            {
+                appearance.SetData(StorageVisuals.Open, SubscribedSessions.Count != 0);
+            }
         }
 
         public void HandlePlayerSessionChangeEvent(object obj, SessionStatusEventArgs SSEA)