[Puzzles] Add basic framework for ScriptableObject puzzle steps and puzzle solving.

Assets/Data/Items/AssPickupItem.asset

@@ -10,8 +10,8 @@ MonoBehaviour:
   m_Enabled: 1
   m_EditorHideFlags: 0
   m_Script: {fileID: 11500000, guid: 951b5c8af5114086a865d4bb7eae4548, type: 3}
-  m_Name: ExamplePickupItem
+  m_Name: AssPickupItem
   m_EditorClassIdentifier: 
-  itemName: TestApple
+  itemName: TestAss
   description: Well... how do you like 'em?
   mapSprite: {fileID: -5471482676633547895, guid: 77ab3d770c92d5344b36eee3293a0f94, type: 3}

Assets/Data/Items/HeadPickupItem.asset

@@ -0,0 +1,17 @@
+%YAML 1.1
+%TAG !u! tag:unity3d.com,2011:
+--- !u!114 &11400000
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 0}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 951b5c8af5114086a865d4bb7eae4548, type: 3}
+  m_Name: HeadPickupItem
+  m_EditorClassIdentifier: 
+  itemName: TestHead
+  description: Well... how do you like 'em?
+  mapSprite: {fileID: -1693247529382600072, guid: 77ab3d770c92d5344b36eee3293a0f94, type: 3}

Assets/Data/Items/HeadPickupItem.asset.meta

@@ -0,0 +1,8 @@
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+NativeFormatImporter:
+  externalObjects: {}
+  mainObjectFileID: 11400000
+  userData: 
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