Support getting artist bios from Wikipedia (experimental)

lib/wikipedia.ex

@@ -0,0 +1,18 @@
+defmodule Wikipedia do
+  alias Wikipedia.API
+
+  def get_artist_summary(wikidata_id) do
+    config = wikipedia_config()
+
+    with {:ok, title} when not is_nil(title) <- API.get_wikipedia_title(wikidata_id, config),
+         {:ok, summary} <- API.get_article_summary(title, config),
+         {:ok, intro_html} <- API.get_article_extract(title, config) do
+      {:ok, Map.put(summary, "intro_html", intro_html)}
+    else
+      {:ok, nil} -> {:error, :no_english_wikipedia}
+      error -> error
+    end
+  end
+
+  defp wikipedia_config, do: Wikipedia.Config.resolve(:music_library)
+end