feat(iroh-base): derive Hash for NodeAddr (#3428)

## Description

<!-- A summary of what this pull request achieves and a rough list of
changes. -->
Fixes #3425 

Derives `Hash` for `NodeAddr`

## Change checklist
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- [x] Self-review.

Co-authored-by: Rüdiger Klaehn <[email protected]>

Author: varun-doshi

iroh-base/src/node_addr.rs

@@ -36,7 +36,7 @@ use crate::{NodeId, PublicKey, RelayUrl};
 /// [discovery]: https://docs.rs/iroh/*/iroh/index.html#node-discovery
 /// [home relay]: https://docs.rs/iroh/*/iroh/relay/index.html
 /// [Relay server]: https://docs.rs/iroh/*/iroh/index.html#relay-servers
-#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord)]
+#[derive(Debug, Clone, Serialize, Deserialize, PartialEq, Eq, PartialOrd, Ord, Hash)]
 pub struct NodeAddr {
     /// The node's identifier.
     pub node_id: NodeId,