fix(ci): ensure all examples compile with the specified feature-set

Due to cargo's feature unification, a full build of our workspace doesn't actually check whether the examples compile as standalone projects.

We add a new CI check that iterates through all crates in the `examples/` directory and runs a plain `cargo check` on them. Any failure is bubbled up via `set -e`, thus failing CI in case one of the `cargo check` commands fails.

To fix the current failures, we construct a simple TCP transport everywhere where we were previously using `development_transport`. That is because `development_transport` requires `mplex` which is now deprecated.

Related #3657.
Related #3809.

Pull-Request: #3811.

examples/identify/src/main.rs

@@ -52,7 +52,7 @@ async fn main() -> Result<(), Box<dyn Error>> {
     println!("Local peer id: {local_peer_id:?}");
 
     let transport = tcp::async_io::Transport::default()
-        .upgrade(Version::V1)
+        .upgrade(Version::V1Lazy)
         .authenticate(noise::NoiseAuthenticated::xx(&local_key).unwrap())
         .multiplex(yamux::YamuxConfig::default())
         .boxed();