Install ring crypto provider for quinn endpoint

A default crypto provider in installed before creating the quinn
endpoint, as that is needed for rustls (part of the endpoint tls
config). This also allows us to get the default provider when connecting
to a remote quic endpoint.

Signed-off-by: Lee Smet <lee.smet@hotmail.com>

mycelium/src/peer_manager.rs

@@ -1062,6 +1062,9 @@ fn make_quic_endpoint(
     quic_listen_port: u16,
     firewall_mark: Option<u32>,
 ) -> Result<quinn::Endpoint, Box<dyn std::error::Error>> {
+    // Install ring crypto provider for rustls
+    rustls::crypto::CryptoProvider::install_default(rustls::crypto::ring::default_provider())
+        .expect("Crypto provider has not been installed yet");
     // Generate self signed certificate certificate.
     // TODO: sign with router keys
     let cert = rcgen::generate_simple_self_signed(vec![format!("{router_id}")])?;