Refactor API structure: update internal handling, enhance input retrieval, and improve template loading

api/template/get.php

@@ -0,0 +1,16 @@
+<?php
+// Set internal to false so that the answer goes to the client
+if (!isset($internal)) {
+    $internal = false;
+    define("API_DIR", "../");
+}
+// Load Main Library
+require API_DIR . "api.php";
+$api = new gbAPI(false, $internal);
+
+// Get Template
+$template = $api->getSetting("template");
+
+$api->answer(200, [
+    "template_name" => $template
+]);