feat: review backend and frontend

- update to the latest version of Java/SpringBoot
- update to the latest version NuxtJS
- add account/password update
- add account creation
- add account password reset
- add bundle to regroup questions and add default questions on user creation
- add bundle creation

frontend/assets/css/_mixin.scss

@@ -1,3 +1,8 @@
-@import "_color";
-@import "_font";
-@import "_spacing";
+@mixin border-shadow() {
+  box-shadow: inset 0 0 0.5px 1px hsla(0, 0%,
+    100%, 0.075),
+  0 0 0 1px hsla(0, 0%, 0%, 0.05),
+  0 0.3px 0.4px hsla(0, 0%, 0%, 0.02),
+  0 0.9px 1.5px hsla(0, 0%, 0%, 0.045),
+  0 3.5px 6px hsla(0, 0%, 0%, 0.09);
+}