Refactor functions out of Library

lib/Artist.php

@@ -126,6 +126,16 @@ class Artist{
 			', [$artistId], Artist::class)[0] ?? throw new Exceptions\ArtistNotFoundException();
 	}
 
+	/**
+	 * @return array<Artist>
+	 */
+	public static function GetAll(): array{
+		return Db::Query('
+			SELECT *
+			from Artists
+			order by Name asc', [], Artist::class);
+	}
+
 	/**
 	 * @throws Exceptions\ArtistNotFoundException
 	 */