tests: add tests for HTTP tracker core events comparison

This test has been added becuase this code was not working:

```rust
let mut announced_peer = peer_copy;
announced_peer.peer_addr = SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 8080);

let mut added_peer = peer;
added_peer.peer_addr = SocketAddr::new(
    IpAddr::V6(Ipv6Addr::new(0x6969, 0x6969, 0x6969, 0x6969, 0x6969, 0x6969, 0x6969, 0x6969)),
    8080,
);

let mut http_stats_event_sender_mock = MockHttpStatsEventSender::new();
http_stats_event_sender_mock
    .expect_send_event()
    .with(eq(Event::TcpAnnounce {
        connection: ConnectionContext::new(
            IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)),
            Some(8080),
            server_service_binding,
        ),
        announced_peer: peer,
        added_peer: peer,
    }))
    .times(1)
    .returning(|_| Box::pin(future::ready(Some(Ok(1)))));
```

using the same events:

Event sent:

TcpAnnounce { connection: ConnectionContext { client: ClientConnectionContext { ip_addr: 127.0.0.1, port: Some(8080) }, server: ServerConnectionContext { service_binding: ServiceBinding { protocol: HTTP, bind_address: 127.0.0.1:7070 } } }, announced_peer: Peer { peer_id: PeerId([45, 113, 66, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48]), peer_addr: 127.0.0.1:8080, updated: 1745316858.487824645s, uploaded: NumberOfBytes(I64(0)), downloaded: NumberOfBytes(I64(0)), left: NumberOfBytes(I64(0)), event: Started }, added_peer: Peer { peer_id: PeerId([45, 113, 66, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48]), peer_addr: [6969:6969:6969:6969:6969:6969:6969:6969]:8080, updated: 1745316858.487824645s, uploaded: NumberOfBytes(I64(0)), downloaded: NumberOfBytes(I64(0)), left: NumberOfBytes(I64(0)), event: Started } }

Event expected in the mock:

TcpAnnounce { connection: ConnectionContext { client: ClientConnectionContext { ip_addr: 127.0.0.1, port: Some(8080) }, server: ServerConnectionContext { service_binding: ServiceBinding { protocol: HTTP, bind_address: 127.0.0.1:7070 } } }, announced_peer: Peer { peer_id: PeerId([45, 113, 66, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48]), peer_addr: 127.0.0.1:8080, updated: 1745316858.487824645s, uploaded: NumberOfBytes(I64(0)), downloaded: NumberOfBytes(I64(0)), left: NumberOfBytes(I64(0)), event: Started }, added_peer: Peer { peer_id: PeerId([45, 113, 66, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48, 48]), peer_addr: [6969:6969:6969:6969:6969:6969:6969:6969]:8080, updated: 1745316858.487824645s, uploaded: NumberOfBytes(I64(0)), downloaded: NumberOfBytes(I64(0)), left: NumberOfBytes(I64(0)), event: Started } }

That's one of the reasons why the expectation was changed. The other
reason is the only relevant part for the peer in the test is the updated peer
address.

Author: josecelano

packages/http-tracker-core/src/event/mod.rs

@@ -94,3 +94,44 @@ impl From<ConnectionContext> for LabelSet {
         ])
     }
 }
+
+#[cfg(test)]
+pub mod test {
+
+    use torrust_tracker_primitives::peer::Peer;
+    use torrust_tracker_primitives::service_binding::Protocol;
+
+    #[test]
+    fn events_should_be_comparable() {
+        use std::net::{IpAddr, Ipv4Addr, SocketAddr};
+
+        use torrust_tracker_primitives::service_binding::ServiceBinding;
+
+        use crate::event::{ConnectionContext, Event};
+
+        let event1 = Event::TcpAnnounce {
+            connection: ConnectionContext::new(
+                IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)),
+                Some(8080),
+                ServiceBinding::new(Protocol::HTTP, SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 7070)).unwrap(),
+            ),
+            announced_peer: Peer::default(),
+            added_peer: Peer::default(),
+        };
+
+        let event2 = Event::TcpAnnounce {
+            connection: ConnectionContext::new(
+                IpAddr::V4(Ipv4Addr::new(127, 0, 0, 2)),
+                Some(8080),
+                ServiceBinding::new(Protocol::HTTP, SocketAddr::new(IpAddr::V4(Ipv4Addr::new(127, 0, 0, 1)), 7070)).unwrap(),
+            ),
+            announced_peer: Peer::default(),
+            added_peer: Peer::default(),
+        };
+
+        let event1_clone = event1.clone();
+
+        assert!(event1 == event1_clone);
+        assert!(event1 != event2);
+    }
+}