Add loader UI component

public/scripts/loader.js

@@ -0,0 +1,12 @@
+const ELEMENT_ID = 'loader';
+
+export function showLoader() {
+    const container = $('<div></div>').attr('id', ELEMENT_ID);
+    const loader = $('<div></div>').addClass('fa-solid fa-spinner fa-spin fa-3x');
+    container.append(loader);
+    $('body').append(container);
+}
+
+export function hideLoader() {
+    $(`#${ELEMENT_ID}`).remove();
+}