feat(ui): astérisque required dans le label de la famille formulaire

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

app/components/malio/checkbox/Checkbox.vue

@@ -25,7 +25,7 @@
         </svg>
       </span>
       <span>
-        {{ label }}
+        {{ label }}<MalioRequiredMark v-if="required" />
       </span>
     </label>
 
@@ -41,6 +41,7 @@
 <script setup lang="ts">
 import {computed, ref, useAttrs, useId} from 'vue'
 import {twMerge} from 'tailwind-merge'
+import MalioRequiredMark from '../shared/RequiredMark.vue'
 
 defineOptions({name: 'MalioCheckbox', inheritAttrs: false})