[Cookbook] add cookbook article for the server:run command

| Q             | A
| ------------- | ---
| Doc fix?      | no
| New docs?     | yes (symfony/symfony#3465)
| Applies to    | all
| Fixed tickets | 
Yeah, ``0.0.0.0`` just means that you want to listen on all interfaces. That's probably the best idea because you can then access it from inside **and**  outside the VM. Of course, if you don't plan to access the application from inside the VM, ``192.168.56.150`` will be sufficient too. But I don't think we should confuse people with too much information here. What do you think?