Add cover art database

Co-authored-by: Job Curtis <job.curtis@gmail.com>
Co-authored-by: Alex Cabal <alex@standardebooks.org>

lib/Museum.php

@@ -0,0 +1,18 @@
+<?
+
+class Museum extends PropertiesBase{
+	public $MuseumId;
+	public $Name;
+	public $Domain;
+
+	public static function GetByUrl(string $url): ?Museum{
+		$result = Db::Query('
+			SELECT *
+			from Museums
+			where ? like concat("%", Domain, "%")
+			limit 1;
+		', [$url], 'Museum');
+
+		return $result[0] ?? null;
+	}
+}