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/Light/EntitySystems/ItemTogglePointLightSystem.cs

@@ -0,0 +1,29 @@
+using Content.Shared.Item.ItemToggle.Components;
+using Content.Shared.Toggleable;
+using ItemTogglePointLightComponent = Content.Shared.Light.Components.ItemTogglePointLightComponent;
+
+namespace Content.Shared.Light.EntitySystems;
+
+/// <summary>
+/// Handles ItemToggle for PointLight
+/// </summary>
+public sealed class ItemTogglePointLightSystem : EntitySystem
+{
+    [Dependency] private readonly SharedAppearanceSystem _appearance = default!;
+    [Dependency] private readonly SharedPointLightSystem _light = default!;
+
+    public override void Initialize()
+    {
+        base.Initialize();
+        SubscribeLocalEvent<ItemTogglePointLightComponent, ItemToggledEvent>(OnLightToggled);
+    }
+
+    private void OnLightToggled(Entity<ItemTogglePointLightComponent> ent, ref ItemToggledEvent args)
+    {
+        if (!_light.TryGetLight(ent.Owner, out var light))
+            return;
+
+        _appearance.SetData(ent, ToggleableLightVisuals.Enabled, args.Activated);
+        _light.SetEnabled(ent.Owner, args.Activated, comp: light);
+    }
+}