protocols/ping: Properly deprecate types with Ping prefix (#2937)

Co-authored-by: Elena Frank <elena.frank@protonmail.com>
Co-authored-by:  João Oliveira <hello@jxs.pt>

protocols/rendezvous/examples/register_with_identify.rs

@@ -22,7 +22,7 @@ use futures::StreamExt;
 use libp2p::core::identity;
 use libp2p::core::PeerId;
 use libp2p::identify::{Identify, IdentifyConfig, IdentifyEvent};
-use libp2p::ping::{Ping, PingConfig, PingEvent, PingSuccess};
+use libp2p::ping;
 use libp2p::swarm::{Swarm, SwarmEvent};
 use libp2p::{development_transport, rendezvous};
 use libp2p::{Multiaddr, NetworkBehaviour};
@@ -47,8 +47,8 @@ async fn main() {
                 identity.public(),
             )),
             rendezvous: rendezvous::client::Behaviour::new(identity.clone()),
-            ping: Ping::new(
-                PingConfig::new()
+            ping: ping::Behaviour::new(
+                ping::Config::new()
                     .with_interval(Duration::from_secs(1))
                     .with_keep_alive(true),
             ),
@@ -100,9 +100,9 @@ async fn main() {
                 log::error!("Failed to register {}", error);
                 return;
             }
-            SwarmEvent::Behaviour(MyEvent::Ping(PingEvent {
+            SwarmEvent::Behaviour(MyEvent::Ping(ping::Event {
                 peer,
-                result: Ok(PingSuccess::Ping { rtt }),
+                result: Ok(ping::Success::Ping { rtt }),
             })) if peer != rendezvous_point => {
                 log::info!("Ping to {} is {}ms", peer, rtt.as_millis())
             }
@@ -117,7 +117,7 @@ async fn main() {
 enum MyEvent {
     Rendezvous(rendezvous::client::Event),
     Identify(IdentifyEvent),
-    Ping(PingEvent),
+    Ping(ping::Event),
 }
 
 impl From<rendezvous::client::Event> for MyEvent {
@@ -132,8 +132,8 @@ impl From<IdentifyEvent> for MyEvent {
     }
 }
 
-impl From<PingEvent> for MyEvent {
-    fn from(event: PingEvent) -> Self {
+impl From<ping::Event> for MyEvent {
+    fn from(event: ping::Event) -> Self {
         MyEvent::Ping(event)
     }
 }
@@ -144,5 +144,5 @@ impl From<PingEvent> for MyEvent {
 struct MyBehaviour {
     identify: Identify,
     rendezvous: rendezvous::client::Behaviour,
-    ping: Ping,
+    ping: ping::Behaviour,
 }