Show artist MusicBrainz ID (with link and copy button)

test/music_library_web/live/artist_live/show_test.exs

@@ -70,7 +70,7 @@ defmodule MusicLibraryWeb.ArtistLive.ShowTest do
       |> assert_has("div", text: "Error loading biography")
     end
 
-    test "it shows the artist country", %{
+    test "it shows the artist country and MB id", %{
       conn: conn,
       artist_musicbrainz_id: artist_musicbrainz_id
     } do
@@ -89,6 +89,7 @@ defmodule MusicLibraryWeb.ArtistLive.ShowTest do
       |> unwrap(&render_async/1)
       |> assert_has("span", text: "United Kingdom")
       |> assert_has("span", text: "🇬🇧")
+      |> assert_has("dd", text: artist_musicbrainz_id)
     end
 
     test "it shows records from the collection and the wishlist", %{