Check if any hand is pinching or pressed in MRTK

IsAnyHandPressed.cs

// Approach using LINQ
private bool IsAnyHandPressed()
{
    return CoreServices.InputSystem.DetectedControllers
        .OfType<IMixedRealityHand>()
        .Any(h => h.Interactions.Any(i => i.InputType == DeviceInputType.Select && i.BoolData));
}

// Approach using for loops
private bool IsAnyHandPressed()
{
    foreach (var controller in CoreServices.InputSystem.DetectedControllers)
    {
        if (controller is IMixedRealityHand)
        {
            for (int i = 0; i < controller.Interactions.Length; i++)
            {
                if(controller.Interactions[i].InputType == DeviceInputType.Select && controller.Interactions[i].BoolData)
                {
                    return true;
                }
            }
        }
    }
    return false;
}