improved plugin class by changing for only one method to do all

plugins/fipfcard_plugin/js/menu/example_menu.js

@@ -5,5 +5,14 @@ sendButton.addEventListener('click', () => {
 	const inputValue = inputElement.value;
 	console.log("inputValue:");
 	console.log(inputValue);
-	ajax_post(inputValue, 'get_data');
+	PLGNTLS_ajax(inputValue, 'get_data')
+		.then((response) => response.json())
+		.then((data) => {
+			console.log("dataaa: ");
+			console.log(data);
+		})
+		.catch((error) => {
+			console.log("error: ");
+			console.log(error);
+		});
 });