refactor(server): moved shared module crypto into arbiter-crypto

server/crates/arbiter-client/src/client.rs

@@ -1,7 +1,7 @@
+use arbiter_crypto::authn::SigningKey;
 use arbiter_proto::{
     ClientMetadata, proto::arbiter_service_client::ArbiterServiceClient, url::ArbiterUrl,
 };
-use ml_dsa::{MlDsa87, SigningKey};
 use std::sync::Arc;
 use tokio::sync::{Mutex, mpsc};
 use tokio_stream::wrappers::ReceiverStream;
@@ -61,7 +61,7 @@ impl ArbiterClient {
     pub async fn connect_with_key(
         url: ArbiterUrl,
         metadata: ClientMetadata,
-        key: SigningKey<MlDsa87>,
+        key: SigningKey,
     ) -> Result<Self, Error> {
         let anchor = webpki::anchor_from_trusted_cert(&url.ca_cert)?.to_owned();
         let tls = ClientTlsConfig::new().trust_anchor(anchor);