Add moving event for locomotion handling

[FejZa]

Reality Collective - Reality Toolkit Pull Request

Overview

So far ILocomotionHandlers have only been notified about a teleportation happening but not free movement. This PR adds a moving event raised whenever free movement is happening, so developers can choose to perform actions upon movement.

This will also be useful in a future release to allow teleportation providers to know that movement is happening. This can be then used to cancel teleportation upon movement and such.

Usage

Method 1: Register a game object handler

public class MovementHandler : MonoBehaviour, ILocomotionServiceHandler
{
    private void Awake()
    {
        ServiceManager.Instance.GetService<ILocomotionService>().Register(gameObject);
    }

    ...
}

Method 2: Use C# event

public class MovementHandler : MonoBehaviour, ILocomotionServiceHandler
{
    private void Awake()
    {
        ServiceManager.Instance.GetService<ILocomotionService>().Moving += LocomotionService_Moving;
    }

    ...
}