RFI: The Input System is unable to operate without a specific camera setup, currently managed by a dependency?

[SimonDarksideJ]

In a clean setup and using only the Core package, if the Input Service is used it currently fails as all the modules all require a specific setup for the camera.

Currently, this is provided by the new Camera package, but in the current implementation, this has created a hard dependency on a package for the Core package.

Discussion is needed on how to progress with core in its current state.

Additional Information

Errors include:

gazeTransform:Main Camera must have a parent!
UnityEngine.Debug:LogError (object)
RealityToolkit.Input.Modules.GazeProvider:InitializeGazePointer () (at ./Packages/com.realitytoolkit.core/Runtime/Input/Modules/GazeProvider.cs:452)
RealityToolkit.Input.Modules.GazeProvider:get_GazePointer () (at ./Packages/com.realitytoolkit.core/Runtime/Input/Modules/GazeProvider.cs:102)
RealityToolkit.Input.Modules.GazeProvider:get_GazeOrigin () (at ./Packages/com.realitytoolkit.core/Runtime/Input/Modules/GazeProvider.cs:121)
RealityToolkit.Input.Modules.GazeProvider:Update () (at ./Packages/com.realitytoolkit.core/Runtime/Input/Modules/GazeProvider.cs:331)

NullReferenceException: Object reference not set to an instance of an object
RealityToolkit.Input.Modules.GazeProvider.get_GazeOrigin () (at ./Packages/com.realitytoolkit.core/Runtime/Input/Modules/GazeProvider.cs:121)
RealityToolkit.Input.Modules.GazeProvider.Update () (at ./Packages/com.realitytoolkit.core/Runtime/Input/Modules/GazeProvider.cs:331)

NullReferenceException: Object reference not set to an instance of an object
RealityToolkit.Input.Modules.GazeProvider.Start () (at ./Packages/com.realitytoolkit.core/Runtime/Input/Modules/GazeProvider.cs:314)
System.Runtime.CompilerServices.AsyncMethodBuilderCore+<>c.<ThrowAsync>b__7_0 (System.Object state) (at <b89873cb176e44a995a4781c7487d410>:0)
UnityEngine.UnitySynchronizationContext+WorkRequest.Invoke () (at <e97d84204f8d4aef92b538c5bab948f1>:0)
UnityEngine.UnitySynchronizationContext.Exec () (at <e97d84204f8d4aef92b538c5bab948f1>:0)
UnityEngine.UnitySynchronizationContext.ExecuteTasks () (at <e97d84204f8d4aef92b538c5bab948f1>:0)