Update various configuration files, components, and assets; enhance notification system and API endpoints; improve documentation and styles across the application.

assets/style/scss/custom/transition/fade.scss

@@ -0,0 +1,10 @@
+// Animation for transition fade
+.fade-enter-active,
+.fade-leave-active {
+  transition: opacity 0.3s ease;
+}
+
+.fade-enter-from,
+.fade-leave-to {
+  opacity: 0;
+}