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/_modal.scss

@@ -0,0 +1,86 @@
+@import "main";
+
+.modal {
+  position: fixed;
+  display: flex;
+  justify-content: center;
+  align-items: end;
+  visibility: hidden;
+  inset: 0;
+  z-index: 1040;
+  @media only screen and (min-width: $breakpoint) {
+    align-items: center;
+  }
+
+  &.visible {
+    visibility: visible;
+  }
+
+  &-content {
+    display: flex;
+    flex-direction: column;
+    gap: 24px;
+
+    background: $white;
+    position: relative;
+
+    margin: 0;
+    padding: 64px 24px;
+    height: 90%;
+    width: 100%;
+
+    @media only screen and (min-width: $breakpoint) {
+      border-radius: 8px;
+      padding: 64px;
+      margin: 32px;
+      max-width: $breakpoint;
+      height: 80%;
+    }
+
+    &-header {
+      margin-block-end: 8px;
+
+      h1 {
+        margin: 0 0 $xx_small 0;
+      }
+
+      .close_modal {
+        position: absolute;
+        right: 0;
+        top: 0;
+        display: flex;
+        justify-content: space-between;
+        align-items: center;
+        gap: 16px;
+        border: 0;
+        cursor: pointer;
+        background: none;
+        font-size: 1rem;
+        padding: 20px;
+      }
+    }
+
+    &-body {
+      display: flex;
+      flex-direction: column;
+      gap: $xxx_small;
+      overflow: auto;
+      overflow-x: hidden;
+    }
+
+    &-footer {
+      display: flex;
+      gap: $xxx_small;
+      .button:not(.button-back) {
+        flex: 1;
+      }
+    }
+  }
+
+  &-overlay {
+    position: absolute;
+    inset: 0;
+    background-color: rgba($color: #000000, $alpha: 0.25);
+    z-index: -1;
+  }
+}