Return callable output on Telescope::withoutRecording

[adamczykpiotr]

This PR allows method Telescope::withoutRecording to return output of the passed callable method thus allowing to make cleaner code & more in line with what is already used for database transactions in Eloquent.

I came accross this when trying to disable telescope logging on one particular command.

Before:

Telescope::stopRecording();

if(/* Some condition */)
    Telescope::startRecording();
    return self::SUCCESS;
}

Telescope::startRecording();
return self::FAILURE;

After:

return Telescope::withoutRecording(function() {
    if(/* Some condition */)
        return self::SUCCESS;
    }
    
    return self::FAILURE;
});