add shields tunes endpoint

api/shields-tunes.php

@@ -0,0 +1,18 @@
+<?php
+header('Content-Type: application/json');
+require "../templates/config.php";
+?>
+{
+	"schemaVersion": 1,
+	"label": "current tunes",
+	"color": "lightgrey",
+<?php
+require "../creds.php";
+
+$result = mysqli_query($mysqli, "SELECT Song FROM articles ORDER BY ID DESC LIMIT 1");
+
+while($res = mysqli_fetch_array($result)) {
+	echo '	"message": "'.$res['Song'].'"',"\n";
+}
+?>
+}