salvage points shop (#2510)

* add conscription bag

* add gar mesons

* remove salvage vendor restock

* add code for shop vendors

* make salvage vendor a shop vendor

* ui fixes

* :trollface:

* update locker and vendor inventory

* add mining hardsuit for 3k

---------

Co-authored-by: deltanedas <@deltanedas:kde.org>

Content.Shared/DeltaV/VendingMachines/ShopVendorUI.cs

@@ -0,0 +1,9 @@
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.DeltaV.VendingMachines;
+
+[Serializable, NetSerializable]
+public sealed class ShopVendorPurchaseMessage(int index) : BoundUserInterfaceMessage
+{
+    public readonly int Index = index;
+}