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/Components/ItemTogglePointLightComponent.cs

@@ -0,0 +1,12 @@
+using Robust.Shared.GameStates;
+
+namespace Content.Shared.Light.Components;
+
+/// <summary>
+/// Toggles point light on an entity whenever ItemToggle hits.
+/// </summary>
+[RegisterComponent, NetworkedComponent]
+public sealed partial class ItemTogglePointLightComponent : Component
+{
+
+}