Feat/add bing search (#2379)

api/core/tools/provider/builtin/bing/tools/bing_web_search.py

         if not query:
             raise Exception('query is required')
         
+        limit = min(tool_parameters.get('limit', 5), 10)
+        result_type = tool_parameters.get('result_type', 'text') or 'text'
+        
         market = tool_parameters.get('market', 'US')
         lang = tool_parameters.get('language', 'en')
 
             raise Exception(f'Error {response.status_code}: {response.text}')
         
         response = response.json()
-        # get the first 5 results
-        search_results = response['webPages']['value'][:5]
-        results = []
-        for result in search_results:
-            results.append(self.create_text_message(
-                text=f'{result["name"]}: {result["url"]}'
-            ))
-
-        return results
-        
+        search_results = response['webPages']['value'][:limit]
+
+        if result_type == 'link':
+            results = []
+            for result in search_results:
+                results.append(self.create_text_message(
+                    text=f'{result["name"]}: {result["url"]}'
+                ))
+
+            return results
+        else:
+            # construct text
+            text = ''
+            for i, result in enumerate(search_results):
+                text += f'{i+1}: {result["name"]} - {result["snippet"]}\n'
+
+            text += '\n\nRelated Searches:\n'
+            for related in response['relatedSearches']['value']:
+                text += f'{related["displayText"]} - {related["webSearchUrl"]}\n'
+
+            return self.create_text_message(text=self.summary(user_id=user_id, content=text))

api/core/tools/provider/builtin/bing/tools/bing_web_search.yaml

   - name: query
     type: string
     required: true
+    form: llm
     label:
       en_US: Query string
       zh_Hans: 查询语句
       zh_Hans: 用于搜索网页内容
       pt_BR: used for searching
     llm_description: key words for searching
-    form: llm
+  - name: limit
+    type: number
+    required: false
+    form: form
+    label:
+      en_US: Limit for results length
+      zh_Hans: 返回长度限制
+      pt_BR: Limit for results length
+    human_description:
+      en_US: limit the number of results
+      zh_Hans: 限制返回结果的数量
+      pt_BR: limit the number of results
+    min: 1
+    max: 10
+    default: 5
+  - name: result_type
+    type: select
+    required: false
+    label:
+      en_US: result type
+      zh_Hans: 结果类型
+      pt_BR: result type
+    human_description:
+      en_US: return a list of links or texts
+      zh_Hans: 返回一个连接列表还是纯文本内容
+      pt_BR: return a list of links or texts
+    default: text
+    options:
+      - value: link
+        label:
+          en_US: Link
+          zh_Hans: 链接
+          pt_BR: Link
+      - value: text
+        label:
+          en_US: Text
+          zh_Hans: 文本
+          pt_BR: Text
+    form: form
   - name: market
     type: select
     label: