LivelinessTokens/Queryables declaration order

[OlivierHecart]

Describe the bug

In case of reconnection, Liveliness tokens are propagated prior to Queryable declarations. So when reacting to a Liveliness token to issue a get, the Queryable declaration might have not yet been propagated and the get might fail.

To reproduce

Using the following examples:
queryable:

let session = zenoh::open(config).res().await.unwrap();

println!("Declaring Queryable on 'key/expression'...");
let queryable = session
    .declare_queryable("key/expression")
    .res()
    .await
    .unwrap();

let _token = session
    .liveliness()
    .declare_token("key/expression")
    .res()
    .await
    .unwrap();

while let Ok(query) = queryable.recv_async().await {
    query
        .reply(Ok(Sample::new(
            KeyExpr::try_from("key/expression").unwrap(),
            "value",
        )))
        .res()
        .await
        .unwrap();
}

get:

let session = zenoh::open(config).res().await.unwrap();

let listener = session
    .liveliness()
    .declare_subscriber("key/expression")
    .res()
    .await
    .unwrap();

while let Ok(token) = listener.recv_async().await {
    if token.kind == SampleKind::Put {
        println!("Sending Query 'key/expression'...");
        let replies = session.get("key/expression").res().await.unwrap();
        while let Ok(reply) = replies.recv_async().await {
            println!(">> Received {:?}", reply);
        }
    }
}

1. Run Zenoh router
2. Run the examples as clients
3. Kill Zenoh Router
4. Restart Zenoh Router
5. The get might randomly get no results.

System info

zenoh v0.11.0-dev-20-gd2399cad