Feat: Add keyword item to AssistantSetting #4543 (#4603)

### What problem does this PR solve?

Feat: Add keyword item to AssistantSetting #4543

### Type of change


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

web/src/locales/en.ts

@@ -520,6 +520,8 @@ This procedure will improve precision of retrieval by adding more information to
       useKnowledgeGraph: 'Use knowledge graph',
       useKnowledgeGraphTip:
         'It will retrieve descriptions of relevant entities,relations and community reports, which will enhance inference of multi-hop and complex question.',
+      keyword: 'Keyword analysis',
+      keywordTip: `Apply LLM to analyze user's questions, extract keywords which will be emphesize during the relevance omputation.`,
     },
     setting: {
       profile: 'Profile',

web/src/locales/zh-traditional.ts

@@ -504,6 +504,8 @@ export default {
       useKnowledgeGraph: '使用知識圖譜',
       useKnowledgeGraph提示:
         '它將檢索相關實體、關係和社區報告的描述，這將增強多跳和複雜問題的推理。',
+      keyword: '關鍵字分析',
+      keywordTip: `應用LLM分析使用者的問題，提取在相關性計算中需要強調的關鍵字。`,
     },
     setting: {
       profile: '概述',

web/src/locales/zh.ts

@@ -521,6 +521,8 @@ General：实体和关系提取提示来自 GitHub - microsoft/graphrag：基于
       useKnowledgeGraph: '使用知识图谱',
       useKnowledgeGraphTip:
         '它将检索相关实体、关系和社区报告的描述，这将增强多跳和复杂问题的推理。',
+      keyword: '关键词分析',
+      keywordTip: `应用 LLM 分析用户的问题，提取在相关性计算中要强调的关键词。`,
     },
     setting: {
       profile: '概要',