feat: with subscription

Signed-off-by: kjuulh <contact@kjuulh.io>

crates/crunch-traits/src/errors.rs

@@ -27,6 +27,18 @@ pub enum PublishError {
     ConnectionError(#[source] anyhow::Error),
 }
 
+#[derive(Error, Debug)]
+pub enum SubscriptionError {
+    #[error("failed to subscribe: {0}")]
+    FailedToSubscribe(#[source] anyhow::Error),
+
+    #[error("connection failed: {0}")]
+    ConnectionFailed(#[source] TransportError),
+
+    #[error("failed to deserialize{0}")]
+    DeserializationFailed(#[source] DeserializeError),
+}
+
 #[derive(Error, Debug)]
 pub enum TransportError {
     #[error("to publish to transport {0}")]