Salvage mob restrictions (#8080)

Content.Server/Salvage/SalvageMobRestrictionsComponent.cs

@@ -0,0 +1,23 @@
+using Robust.Shared.GameObjects;
+using Robust.Shared.Maths;
+using Robust.Shared.Serialization.Manager.Attributes;
+using Robust.Shared.ViewVariables;
+using System;
+
+namespace Content.Server.Salvage;
+
+/// <summary>
+///     This component exists as a sort of stateful marker for a
+///     killswitch meant to keep salvage mobs from doing stuff they
+///     really shouldn't (attacking station).
+///     The main thing is that adding this component ties the mob to
+///     whatever it's currently parented to.
+/// </summary>
+[RegisterComponent]
+public sealed class SalvageMobRestrictionsComponent : Component
+{
+    [ViewVariables(VVAccess.ReadOnly)]
+    [DataField("linkedGridEntity")]
+    public EntityUid LinkedGridEntity = EntityUid.Invalid;
+}
+