cli: Add `rad self --address` command

Useful when running seed nodes.

radicle-cli/examples/rad-self.md

@@ -38,3 +38,8 @@ ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIHahWSBEpuT1ESZbynOmBNkLBSnR32Ar4woZqSV2YNH1
 $ rad self --home
 [..]/home/alice/.radicle
 ```
+
+```
+$ rad self --address
+z6MknSLrJoTcukLrE435hVNQT4JUhbvWLX4kUzqkEStBU8Vi@seed.alice.acme:8776
+```

radicle-cli/src/commands/self.rs

@@ -1,6 +1,7 @@
 use std::ffi::OsString;
 
 use radicle::crypto::ssh;
+use radicle::node::config::ConnectAddress;
 use radicle::Profile;
 
 use crate::terminal as term;
@@ -18,9 +19,10 @@ Usage
 
 Options
 
+    --did                Show your DID
     --alias              Show your Node alias
     --nid                Show your Node ID (NID)
-    --did                Show your DID
+    --address            Show your Node address(es)
     --home               Show your Radicle home
     --config             Show the location of your configuration file
     --ssh-key            Show your public key in OpenSSH format
@@ -32,6 +34,7 @@ Options
 #[derive(Debug)]
 enum Show {
     Alias,
+    Address,
     NodeId,
     Did,
     Home,
@@ -58,6 +61,9 @@ impl Args for Options {
                 Long("alias") if show.is_none() => {
                     show = Some(Show::Alias);
                 }
+                Long("address") if show.is_none() => {
+                    show = Some(Show::Address);
+                }
                 Long("nid") if show.is_none() => {
                     show = Some(Show::NodeId);
                 }
@@ -99,6 +105,12 @@ pub fn run(options: Options, ctx: impl term::Context) -> anyhow::Result<()> {
         Show::Alias => {
             term::print(profile.config.alias());
         }
+        Show::Address => {
+            let nid = profile.public_key;
+            for addr in profile.config.node.external_addresses {
+                term::print(ConnectAddress::from((nid, addr)).to_string());
+            }
+        }
         Show::NodeId => {
             term::print(profile.id());
         }

radicle-cli/tests/commands.rs

@@ -1161,7 +1161,10 @@ fn rad_sync_without_node() {
 #[test]
 fn rad_self() {
     let mut environment = Environment::new();
-    let alice = environment.node(Config::test(Alias::new("alice")));
+    let alice = environment.node(Config {
+        external_addresses: vec!["seed.alice.acme:8776".parse().unwrap()],
+        ..Config::test(Alias::new("alice"))
+    });
     let working = environment.tmp().join("working");
 
     test("examples/rad-self.md", working, Some(&alice.home), []).unwrap();