Polling option fallback

#### Support plan

* *is this issue currently blocking your project?* (yes/no): yes
* *is this issue affecting a production system?* (yes/no): yes

#### Context

* *node version*: 12.4.5
* *module version*: 12.0.4
* *environment* (e.g. node, browser, native): node/browser
* *used with* (e.g. hapi application, another framework, standalone, ...): hapiJS
* *any other relevant information*:

#### How can we help?

I looked at docs, as ell as open/closed issue using the 'polling' keyword and couldn't find how to add a polling fallback on hapijs such as this exists on library like socket.io.
We would want to use the publish/subscribe method as well as the hapiJS request with 'post/get' method.

```js
/**CLIENT CODE connection **/
return this.socketClient.connect({
reconnect: true, //whether the client should try to reconnect
delay: 2000, //time in milliseconds to wait between each reconnection attempt, cumulative
maxDelay: 15000, //the maximum delay time in milliseconds between reconnections
retries: 10 //number of reconnection attempts
})
```

```js
/** SERVER REGISTER **/
await server.register(
{
plugin: Nes,
options: {
heartbeat: {
interval: 15000,
timeout: 5000
},
auth: false
}
},
{
routes: process.env.ROOT_PATH ? {
prefix: ROOT_PATH
} : {}
}
);
```

Is such a thing possible using hapiJS/nes ? Or is there another plugin we need to register to instead that would work like hapiJS/nes but with polling experience ?

My dearest apologies for doubling this in hapi ( https://github.com/hapijs/hapi/issues/4287 ), I realized after posting, this was more relevant to hapijs/nes and not hapijs as a whole.