Knowledge system (#770)

* remove all requirements

* clean up and renaming to knowledge

* update code

* add admin knowledge verbs

* move shoes under pants

* knowledge based recipes

* clean up

* sewing knowledges

* knowledge dependencies

* knowledge learning objects

* more knowledge

* metallforging skill

* knowledge books

* start knowledges, T1 and T2 books in demiplanes

* remove coins from demiplanes

* roundstart knowledge

Content.Shared/_CP14/Knowledge/Components/CP14KnowledgeLearningSourceComponent.cs

@@ -0,0 +1,17 @@
+using Content.Shared._CP14.Knowledge.Prototypes;
+using Robust.Shared.Prototypes;
+
+namespace Content.Shared._CP14.Knowledge.Components;
+
+/// <summary>
+/// Allows new knowledge to be learnt through interactions with an object.
+/// </summary>
+[RegisterComponent, Access(typeof(SharedCP14KnowledgeSystem))]
+public sealed partial class CP14KnowledgeLearningSourceComponent : Component
+{
+    [DataField, ViewVariables(VVAccess.ReadOnly)]
+    public HashSet<ProtoId<CP14KnowledgePrototype>> Knowledges { get; private set; } = new();
+
+    [DataField]
+    public TimeSpan DoAfter = TimeSpan.FromSeconds(5f);
+}