Use dedicated http client pool for MusicBrainz

lib/music_brainz/api_impl.ex

@@ -249,7 +249,7 @@ defmodule MusicBrainz.APIImpl do
 
     Logger.debug("Fetching data from #{url}")
 
-    case Finch.request(req, MusicLibrary.Finch) do
+    case Finch.request(req, MusicBrainz.Finch) do
       {:ok, response} when response.status == 200 ->
         {:ok, Jason.decode!(response.body)}
 
@@ -268,7 +268,7 @@ defmodule MusicBrainz.APIImpl do
 
     Logger.debug("Fetching data from #{url}")
 
-    case Finch.request(req, MusicLibrary.Finch) do
+    case Finch.request(req, MusicBrainz.Finch) do
       {:ok, response} when response.status == 200 ->
         {:ok, response.body}
 

lib/music_brainz/supervisor.ex

@@ -0,0 +1,16 @@
+defmodule MusicBrainz.Supervisor do
+  use Supervisor
+
+  def start_link(config) do
+    Supervisor.start_link(__MODULE__, config, name: __MODULE__)
+  end
+
+  @impl true
+  def init(_config) do
+    children = [
+      {Finch, name: MusicBrainz.Finch}
+    ]
+
+    Supervisor.init(children, strategy: :one_for_one)
+  end
+end