feat(Utility): add prefab creator

The latest version of Zinnia has the basis of a prefab creator that can
be used to enable easy adding of prefabs to a scene without needing to
drag and drop from directories. Instead a new menu item is added for
quickly adding prefabs. The guide has been updated to accommodate this
and the FodyWeavers.xml is now located in the root to serve both the
Runtime and Editor scripts.

Author: extendreality

Documentation/HowToGuides/ConvertingAFloatActionToABooleanAction/README.md

@@ -30,12 +30,10 @@ Create a new `Cube` Unity 3D Object by selecting `Main Menu -> GameObject -> 3D
 
 ### Step 2
 
-Expand the `Tilia Input UnityInputManager` package directory in the Unity Project window and select then `Packages -> Tilia Input UnityInputManager -> Runtime -> Prefabs -> Actions` directory then drag and drop the `Input.UnityInputManager.Axis1DAction` prefab into the Unity Hierarchy window.
+Add a `Input.UnityInputManager.Axis1DAction` prefab to the Unity project hierarchy by selecting `GameObject -> Tilia -> Prefabs -> Input -> UnityInputManager -> Actions -> Input.UnityInputManager.Axis1DAction` from the Unity main top menu.
 
 > Be sure to use the `Input.UnityInputManager.Axis1DAction` prefab and not just add the `Unity Input Manager Axis 1D Action` component to a GameObject as the component needs linking to a `MomentProcessor` to function.
 
-![Drag Axis1DActionAction To Hierarchy](assets/images/DragAxis1DActionActionToHierarchy.png)
-
 ### Step 3
 
 Select the `Input.UnityInputManager.Axis1DAction` GameObject in the Unity Hierarchy window and change the `Axis Name` parameter on the `Unity Input Manager Axis 1D Action` component to listen for the desired axis, in this case enter `Tilia.Input.UnityInputManager_Axis9` to listen for the Left Trigger axis on an Xbox Controller.

Documentation/HowToGuides/ConvertingAFloatActionToABooleanAction/assets/images/DragAxis1DActionActionToHierarchy.png

@@ -28,11 +28,9 @@ We will utilize a 1D axis action to control the position of this sphere in the s
 
 ### Step 2
 
-Expand the `Tilia Input UnityInputManager` package directory in the Unity Project window and select then `Packages -> Tilia Input UnityInputManager -> Runtime -> Prefabs -> Actions` directory then drag and drop the `Input.UnityInputManager.1DAxisAction` prefab into the Unity Hierarchy window.
+Add a `Input.UnityInputManager.Axis1DAction` prefab to the Unity project hierarchy by selecting `GameObject -> Tilia -> Prefabs -> Input -> UnityInputManager -> Actions -> Input.UnityInputManager.Axis1DAction` from the Unity main top menu.
 
-> Be sure to use the `Input.UnityInputManager.1DAxisAction` prefab and not just add the `Unity Input Manager Axis 1D Action` component to a GameObject as the component needs linking to a `MomentProcessor` to function.
-
-![Drag 1D AxisAction To Hierarchy](assets/images/Drag1DAxisActionToHierarchy.png)
+> Be sure to use the `Input.UnityInputManager.Axis1DAction` prefab and not just add the `Unity Input Manager Axis 1D Action` component to a GameObject as the component needs linking to a `MomentProcessor` to function.
 
 ### Step 3
 

Documentation/HowToGuides/ConvertingAFloatActionToABooleanAction/assets/images/DragAxis1DActionActionToHierarchy.png.meta

@@ -31,12 +31,10 @@ This will form the basic floor of the scene world and provide a way of testing a
 
 ### Step 2
 
-Expand the `Tilia Input UnityInputManager` package directory in the Unity Project window and select then `Packages -> Tilia Input UnityInputManager -> Runtime -> Prefabs -> Actions` directory then drag and drop the `Input.UnityInputManager.ButtonAction` prefab into the Unity Hierarchy window.
+Add a `Input.UnityInputManager.ButtonAction` prefab to the Unity project hierarchy by selecting `GameObject -> Tilia -> Prefabs -> Input -> UnityInputManager -> Actions -> Input.UnityInputManager.ButtonAction` from the Unity main top menu.
 
 > Be sure to use the `Input.UnityInputManager.ButtonAction` prefab and not just add the `Unity Input Manager Button Action` component to a GameObject as the component needs linking to a `MomentProcessor` to function.
 
-![Drag ButtonAction To Hierarchy](assets/images/DragButtonActionToHierarchy.png)
-
 ### Step 3
 
 Select the `Input.UnityInputManager.ButtonAction` GameObject in the Unity Hierarchy window and change the `Key Code` parameter on the `Unity Input Manager Button Action` component to listen for the desired key press, in this case select `Space` to listen for the press of the Spacebar on the keyboard.
@@ -75,9 +73,7 @@ Play the Unity scene and press the Spacebar on the keyboard and the `Floor` Game
 
 Let's use one the `Controller Mapping` prefabs to do the same action as outlined above but based on a controller press.
 
-Expand the `Tilia Input UnityInputManager` Package directory in the Unity Project window and select then `Packages -> Tilia Input UnityInputManager -> Runtime -> Prefabs -> Controller Mappings` directory then drag and drop the `Input.UnityInputManager.XboxController` prefab into the Unity Hierarchy window.
-
-![Drag Xbox Controller Mapping To Hierarchy](assets/images/DragXboxControllerMappingToHierarchy.png)
+Add a `Input.UnityInputManager.XboxController` prefab to the Unity project hierarchy by selecting `GameObject -> Tilia -> Prefabs -> Input -> UnityInputManager -> ControllerMappings -> Input.UnityInputManager.XboxController` from the Unity main top menu.
 
 ### Step 7