Feat: Add TagFeatureItem #4368 (#4432)

### What problem does this PR solve?

Feat: Add TagFeatureItem #4368

### Type of change


- [x] New Feature (non-breaking change which adds functionality)

web/src/locales/en.ts

@@ -338,6 +338,8 @@ This procedure will improve precision of retrieval by adding more information to
 </ul>
       `,
       topnTags: 'Top-N Tags',
+      tags: 'Tags',
+      addTag: 'Add tag',
     },
     chunk: {
       chunk: 'Chunk',

web/src/locales/zh-traditional.ts

@@ -322,6 +322,8 @@ export default {
  <li>關鍵字由 LLM 生成，既昂貴又耗時。
 </ul>
  `,
+      tags: '標籤',
+      addTag: '增加標籤',
     },
     chunk: {
       chunk: '解析塊',

web/src/locales/zh.ts

@@ -339,6 +339,8 @@ export default {
       <li>关键字由 LLM 生成，这既昂贵又耗时。 </li>
       </ul>
       `,
+      tags: '标签',
+      addTag: '增加标签',
     },
     chunk: {
       chunk: '解析块',