Send bandwidth status messages when connecting (#4691)

* Send bandwidth status messages when connecting

* Rename to task_client

* Move status message type to bandwidth controller

common/bandwidth-controller/src/event.rs

@@ -0,0 +1,13 @@
+// Copyright 2024 - Nym Technologies SA <contact@nymtech.net>
+// SPDX-License-Identifier: Apache-2.0
+
+// See other comments for other TaskStatus message enumds about abusing the Error trait when we
+// should have a new trait for TaskStatus messages
+#[derive(Debug, thiserror::Error)]
+pub enum BandwidthStatusMessage {
+    #[error("remaining bandwidth: {0}")]
+    RemainingBandwidth(i64),
+
+    #[error("no bandwidth left")]
+    NoBandwidth,
+}

common/bandwidth-controller/src/lib.rs

@@ -14,8 +14,11 @@ use nym_validator_client::coconut::all_coconut_api_clients;
 use nym_validator_client::nym_api::EpochId;
 use nym_validator_client::nyxd::contract_traits::DkgQueryClient;
 
+pub use event::BandwidthStatusMessage;
+
 pub mod acquire;
 pub mod error;
+mod event;
 mod utils;
 
 #[derive(Debug)]