add PreconditionRequirement and RelatedModule requirement

Assets/Engine/Runtime/Requirements/RelatedModule.cs

@@ -0,0 +1,20 @@
+using System.Collections.Generic;
+using EscapeRoomEngine.Engine.Runtime.Modules;
+using NaughtyAttributes;
+using UnityEngine;
+
+namespace EscapeRoomEngine.Engine.Runtime.Requirements
+{
+    [CreateAssetMenu(menuName = "Requirements/Related Module")]
+    class RelatedModule : PreconditionRequirement
+    {
+        [InfoBox("A related module that must be added to the same space successfully before this module is added.")]
+        [Required]
+        public ModuleDescription relatedModule;
+        
+        protected override IEnumerable<bool> GenerateCandidates(Module module, Space space)
+        {
+            return new []{ space.AddModuleWithRequirements(Module.CreateModuleByType(space, relatedModule)) };
+        }
+    }
+}