Add maintenance page

Some actions are missing

lib/music_library_web/live/maintenance_live/index.html.heex

@@ -0,0 +1,60 @@
+<Layouts.app flash={@flash} current_section={@current_section} socket={@socket}>
+  <div>
+    <h1 class="mt-2 text-base lg:text-2xl text-zinc-900 dark:text-zinc-200 font-semibold">
+      {gettext("Maintenance")}
+    </h1>
+    <h3 class="mt-4 text-base font-semibold text-zinc-900 dark:text-white">
+      {gettext("Records")}
+    </h3>
+    <p class="mt-2 max-w-4xl text-sm text-zinc-500 dark:text-zinc-400">
+      {gettext(
+        "Run operations on the entire record database. Monitor execution via the Oban dashboard."
+      )}
+    </p>
+    <ul class="mt-4">
+      <li>
+        <.button type="button" phx-click="refresh_records_musicbrainz_data">
+          {gettext("Refresh MusicBrainz data")}
+        </.button>
+        <.button type="button" phx-click="generate_record_embeddings">
+          {gettext("Regenerate record embeddings")}
+        </.button>
+      </li>
+    </ul>
+    <h3 class="mt-4 text-base font-semibold text-zinc-900 dark:text-white">
+      {gettext("Artists")}
+    </h3>
+    <p class="mt-2 max-w-4xl text-sm text-zinc-500 dark:text-zinc-400">
+      {gettext(
+        "Run operations on the entire artist database. Monitor execution via the Oban dashboard."
+      )}
+    </p>
+    <ul class="mt-4">
+      <li>
+        <.button disabled type="button" phx-click="refresh_artists_musicbrainz_data">
+          {gettext("Refresh MusicBrainz data")}
+        </.button>
+        <.button disabled type="button" phx-click="refresh_artists_discogs_data">
+          {gettext("Refresh Discogs data")}
+        </.button>
+      </li>
+    </ul>
+    <h3 class="mt-4 text-base font-semibold text-zinc-900 dark:text-white">
+      {gettext("Database")}
+    </h3>
+    <p class="mt-2 max-w-4xl text-sm text-zinc-500 dark:text-zinc-400">
+      {gettext("Run lower-level operations on the database")}
+    </p>
+    <ul class="mt-4">
+      <li>
+        <.button
+          type="button"
+          phx-click="db_vacuum"
+          phx-disable-with={gettext("Running vacuum...")}
+        >
+          {gettext("Vacuum")}
+        </.button>
+      </li>
+    </ul>
+  </div>
+</Layouts.app>