feat: Add py-libp2p to rust-libp2p interoperability tests

tests/interop/rust_libp2p/rust_node/Cargo.toml

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+[package]
+name = "ping-example"
+version = "0.1.0"
+edition.workspace = true
+publish = false
+license = "MIT"
+
+[package.metadata.release]
+release = false
+
+[dependencies]
+futures = { workspace = true }
+libp2p = { path = "../../libp2p", features = ["noise", "ping", "tcp", "tokio", "yamux", "rsa"] }
+tokio = { workspace = true, features = ["full"] }
+tracing-subscriber = { workspace = true, features = ["env-filter"] }
+
+[lints]
+workspace = true

tests/interop/rust_libp2p/rust_node/README.md

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+## Description
+
+The ping example showcases how to create a network of nodes that establish connections, negotiate the ping protocol, and ping each other.
+
+## Usage
+
+To run the example, follow these steps:
+
+1. In a first terminal window, run the following command:
+
+   ```sh
+   cargo run
+   ```
+
+   This command starts a node and prints the `PeerId` and the listening addresses, such as `Listening on "/ip4/0.0.0.0/tcp/24915"`.
+
+2. In a second terminal window, start a new instance of the example with the following command:
+
+   ```sh
+   cargo run -- /ip4/127.0.0.1/tcp/24915
+   ```
+
+   Replace `/ip4/127.0.0.1/tcp/24915` with the listen address of the first node obtained from the first terminal window.
+
+3. The two nodes will establish a connection, negotiate the ping protocol, and begin pinging each other.
+
+## Conclusion
+
+The ping example demonstrates the basic usage of **libp2p** to create a simple p2p network and implement a ping protocol.
+By running multiple nodes and observing the ping behavior, users can gain insights into how **libp2p** facilitates communication and interaction between peers.

tests/interop/rust_libp2p/rust_node/src/main.rs

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+// Copyright 2018 Parity Technologies (UK) Ltd.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a
+// copy of this software and associated documentation files (the "Software"),
+// to deal in the Software without restriction, including without limitation
+// the rights to use, copy, modify, merge, publish, distribute, sublicense,
+// and/or sell copies of the Software, and to permit persons to whom the
+// Software is furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+// DEALINGS IN THE SOFTWARE.
+
+#![doc = include_str!("../README.md")]
+
+use std::{error::Error, time::Duration};
+
+use futures::prelude::*;
+use libp2p::{noise, ping, swarm::SwarmEvent, tcp, yamux, Multiaddr};
+use tracing_subscriber::EnvFilter;
+
+#[tokio::main]
+async fn main() -> Result<(), Box<dyn Error>> {
+    let _ = tracing_subscriber::fmt()
+        .with_env_filter(EnvFilter::from_default_env())
+        .try_init();
+
+    let mut swarm = libp2p::SwarmBuilder::with_new_identity()
+        .with_tokio()
+        .with_tcp(
+            tcp::Config::default(),
+            noise::Config::new,
+            yamux::Config::default,
+        )?
+        .with_behaviour(|_| ping::Behaviour::default())?
+        .with_swarm_config(|cfg| cfg.with_idle_connection_timeout(Duration::from_secs(u64::MAX)))
+        .build();
+
+    // Print the peer ID
+    println!("Local peer ID: {}", swarm.local_peer_id());
+
+    // Tell the swarm to listen on all interfaces and a random, OS-assigned
+    // port.
+    swarm.listen_on("/ip4/0.0.0.0/tcp/0".parse()?)?;
+
+    // Dial the peer identified by the multi-address given as the second
+    // command-line argument, if any.
+    if let Some(addr) = std::env::args().nth(1) {
+        let remote: Multiaddr = addr.parse()?;
+        swarm.dial(remote)?;
+        println!("Dialed {addr}")
+    }
+
+    loop {
+        match swarm.select_next_some().await {
+            SwarmEvent::NewListenAddr { address, .. } => println!("Listening on {address:?}"),
+            SwarmEvent::Behaviour(event) => println!("{event:?}"),
+            _ => {}
+        }
+    }
+}