feat: Initial authentication logic and UX

wp-content/themes/moonshine/app/components/auth/AuthLogoutForm.vue

@@ -0,0 +1,24 @@
+<script setup lang="ts">
+const { logout } = useAuthConnexion();
+</script>
+
+<template>
+  <div class="w-full space-y-6">
+    <div class="flex flex-col text-center">
+      <div class="text-xl text-pretty font-semibold text-highlighted">
+        Déconnexion
+      </div>
+      <div class="mt-1 text-base text-pretty text-muted">
+        Veuillez confirmer la déconnexion.
+      </div>
+    </div>
+    <UButton
+      icon="i-lucide-log-out"
+      block
+      loading-auto
+      to="#"
+      label="Déconnexion"
+      @click="logout()"
+    />
+  </div>
+</template>