feat(new-tool): IPv4 subnet calculator

src/tools/ipv4-subnet-calculator/copyable-ip-like.vue

@@ -0,0 +1,35 @@
+<template>
+  <n-tooltip trigger="hover">
+    <template #trigger>
+      <span class="ip" @click="handleClick">{{ ip }}</span>
+    </template>
+    {{ tooltipText }}
+  </n-tooltip>
+</template>
+
+<script setup lang="ts">
+import { useClipboard } from '@vueuse/core';
+import { ref, toRefs } from 'vue';
+
+const props = withDefaults(defineProps<{ ip?: string }>(), { ip: '' });
+const { ip } = toRefs(props);
+
+const initialText = 'Copy to clipboard';
+const tooltipText = ref(initialText);
+
+const { copy } = useClipboard({ source: ip });
+
+function handleClick() {
+  copy();
+  tooltipText.value = 'Copied!';
+
+  setTimeout(() => (tooltipText.value = initialText), 1000);
+}
+</script>
+
+<style scoped lang="less">
+.ip {
+  font-family: monospace;
+  cursor: pointer;
+}
+</style>