machine upgrade guidebook (#13511)

* machine upgrade guidebook

* oops

* guidehelpcomponent

* build, damn you

Content.Shared/Construction/Components/MachinePartComponent.cs

@@ -0,0 +1,24 @@
+using Content.Shared.Construction.Prototypes;
+using Robust.Shared.GameStates;
+using Robust.Shared.Serialization.TypeSerializers.Implementations.Custom.Prototype;
+
+namespace Content.Shared.Construction.Components
+{
+    [RegisterComponent, NetworkedComponent]
+    public sealed class MachinePartComponent : Component
+    {
+        [DataField("part", required: true, customTypeSerializer: typeof(PrototypeIdSerializer<MachinePartPrototype>))]
+        public string PartType { get; private set; } = default!;
+
+        [ViewVariables(VVAccess.ReadWrite)]
+        [DataField("rating")]
+        public int Rating { get; private set; } = 1;
+
+        /// <summary>
+        ///     This number is used in tests to ensure that you can't use high quality machines for arbitrage. In
+        ///     principle there is nothing wrong with using higher quality parts, but you have to be careful to not
+        ///     allow them to be put into a lathe or something like that.
+        /// </summary>
+        public const int MaxRating = 4;
+    }
+}