made a class version of plugin_tools

plugins/fipfcard_plugin/js/utils/ajax.js

@@ -6,10 +6,10 @@ it can be "overloaded" with a callback_response and _error
 function ajax_post(ajax_data, action, callback_response, callback_error) {
 	const data = new FormData();
 	data.append('action', action);
-	data.append('_ajax_nonce', wp_ajax._nonce);
+	data.append('_ajax_nonce', fipfcard_ajax._nonce);
 	data.append('data', ajax_data);
 
-	fetch(wp_ajax._url, {
+	fetch(fipfcard_ajax._url, {
 		method: 'POST',
 		credentials: 'same-origin',
 		body: data