feat(front): add Skeleton component for loading state representation

front/components/ui/skeleton/Skeleton.vue

@@ -0,0 +1,17 @@
+<script setup lang="ts">
+import type { HTMLAttributes } from 'vue'
+import { cn } from '@/lib/utils'
+
+interface SkeletonProps {
+  class?: HTMLAttributes['class']
+}
+
+const props = defineProps<SkeletonProps>()
+</script>
+
+<template>
+  <div
+    data-slot="skeleton"
+    :class="cn('animate-pulse rounded-md bg-primary/10', props.class)"
+  />
+</template>