feat: add Wikipedia operator #918 (#1516)

### What problem does this PR solve?

Add Wikipedia operator #918 

### Type of change


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

web/src/locales/en.ts

@@ -579,6 +579,7 @@ The above is the content you need to summarize.`,
       messageDescription:
         'This component is used to send user static information. You can prepare several messages which will be chosen randomly.',
       keywordDescription: `This component is used to extract keywords from user's question. Top N specifies the number of keywords you need to extract.`,
+      wikipediaDescription: `This component is used to get search result from https://www.wikipedia.org/. Typically, it performs as a supplement to knowledgebases. Top N specifies the number of search results you need to adopt.`,
       promptText: `Please summarize the following paragraphs. Be careful with the numbers, do not make things up. Paragraphs as following:
         {input}
   The above is the content you need to summarize.`,
@@ -612,6 +613,7 @@ The above is the content you need to summarize.`,
       messageHistoryWindowSize: 'Message window size',
       messageHistoryWindowSizeTip:
         'The  window size of conversation history that needed to be seen by LLM. The larger the better. But be careful with the maximum content length of LLM.',
+      wikipedia: 'Wikipedia',
     },
     footer: {
       profile: 'All rights reserved @ React',