feat(new tool): html cleaner

HTML Cleaner (with paste html)
Fix #537

src/tools/html-cleaner/html-cleaner.vue

@@ -0,0 +1,54 @@
+<script setup lang="ts">
+import DOMPurify from 'dompurify';
+import beautify from 'js-beautify';
+import TextareaCopyable from '@/components/TextareaCopyable.vue';
+
+const inputHtml = ref('');
+const outputHtml = computed(() => {
+  const cleanedHtml = DOMPurify.sanitize(inputHtml.value ?? '',
+    {
+      ALLOWED_ATTR: [
+        'href', 'src',
+        'width', 'height',
+        'alt',
+        'colspan', 'rowspan',
+      ],
+      FORBID_TAGS: ['form', 'span'],
+      ALLOW_DATA_ATTR: false,
+      ALLOW_ARIA_ATTR: false,
+      RETURN_DOM: true,
+    }).outerHTML;
+  return beautify.html(cleanedHtml, {
+    unformatted: ['code', 'pre', 'em', 'strong', 'span'],
+    indent_inner_html: true,
+    indent_char: ' ',
+    indent_size: 2,
+    eol: '\n',
+  });
+});
+</script>
+
+<template>
+  <div>
+    <c-input-text
+      v-model:value="inputHtml"
+      multiline raw-text
+      placeholder="Your HTML content..."
+      rows="8"
+      autofocus
+      label="Your HTML to clean (can paste from clipboard):"
+      paste-html
+    />
+
+    <n-divider />
+
+    <n-form-item label="Output cleaned HTML:">
+      <TextareaCopyable
+        :value="outputHtml"
+        multiline
+        language="html"
+        :word-wrap="true"
+      />
+    </n-form-item>
+  </div>
+</template>

src/tools/html-cleaner/index.ts

@@ -0,0 +1,12 @@
+import { BrandHtml5 } from '@vicons/tabler';
+import { defineTool } from '../tool';
+
+export const tool = defineTool({
+  name: 'Html cleaner',
+  path: '/html-cleaner',
+  description: 'Clean HTML',
+  keywords: ['html', 'cleaner'],
+  component: () => import('./html-cleaner.vue'),
+  icon: BrandHtml5,
+  createdAt: new Date('2024-02-25'),
+});

src/tools/index.ts

@@ -6,6 +6,7 @@ import { tool as asciiTextDrawer } from './ascii-text-drawer';
 
 import { tool as textToUnicode } from './text-to-unicode';
 import { tool as safelinkDecoder } from './safelink-decoder';
+import { tool as htmlCleaner } from './html-cleaner';
 import { tool as pdfSignatureChecker } from './pdf-signature-checker';
 import { tool as numeronymGenerator } from './numeronym-generator';
 import { tool as macAddressGenerator } from './mac-address-generator';
@@ -107,6 +108,7 @@ export const toolsByCategory: ToolCategory[] = [
       listConverter,
       tomlToJson,
       tomlToYaml,
+      htmlCleaner,
     ],
   },
   {