ItemToggle + slots stuff (#31312)

* ItemToggle + slots stuff

- Add component for itemslot locks to match LockComponent (surprised this didn't exist).
- Add thing for pointlight to match itemtoggle. In future should be used for PDAs and stuff but need to fix some other stuff first.

* Also this

* grill

Content.Shared/Containers/ItemSlot/ItemSlotsSystem.Lock.cs

@@ -0,0 +1,36 @@
+using Content.Shared.Lock;
+
+namespace Content.Shared.Containers.ItemSlots;
+
+public sealed partial class ItemSlotsSystem
+{
+    private void InitializeLock()
+    {
+        SubscribeLocalEvent<ItemSlotsLockComponent, MapInitEvent>(OnLockMapInit);
+        SubscribeLocalEvent<ItemSlotsLockComponent, LockToggledEvent>(OnLockToggled);
+    }
+
+    private void OnLockMapInit(Entity<ItemSlotsLockComponent> ent, ref MapInitEvent args)
+    {
+        if (!TryComp(ent.Owner, out LockComponent? lockComp))
+            return;
+
+        UpdateLocks(ent, lockComp.Locked);
+    }
+
+    private void OnLockToggled(Entity<ItemSlotsLockComponent> ent, ref LockToggledEvent args)
+    {
+        UpdateLocks(ent, args.Locked);
+    }
+
+    private void UpdateLocks(Entity<ItemSlotsLockComponent> ent, bool value)
+    {
+        foreach (var slot in ent.Comp.Slots)
+        {
+            if (!TryGetSlot(ent.Owner, slot, out var itemSlot))
+                continue;
+
+            SetLock(ent.Owner, itemSlot, value);
+        }
+    }
+}