fix: type for parsed torrent metadata using intermodal console app

The announce_list is an array of arrays in the intermodal JSON output:

```
"announce-list": [
      [
         "https://academictorrents.com/announce.php"
      ],
      [
         "https://ipv6.academictorrents.com/announce.php"
      ],
      [
         "udp://tracker.opentrackr.org:1337/announce"
      ],
      [
         "udp://tracker.openbittorrent.com:80/announce"
      ],
      [
         "http://bt1.archive.org:6969/announce"
      ],
      [
         "http://bt2.archive.org:6969/announce"
      ]
   ],
```

Not an array of strings.

tests/common/contexts/torrent/file.rs

@@ -20,7 +20,7 @@ pub struct TorrentFileInfo {
     pub content_size: u64,
     pub private: bool,
     pub tracker: Option<String>,
-    pub announce_list: Vec<String>,
+    pub announce_list: Vec<Vec<String>>,
     pub update_url: Option<String>,
     pub dht_nodes: Vec<String>,
     pub piece_size: u64,