community[minor]: CogniSwitch Agent Toolkit for LangChain (#17312)

**Description**: CogniSwitch focusses on making GenAI usage more
reliable. It abstracts out the complexity & decision making required for
tuning processing, storage & retrieval. Using simple APIs documents /
URLs can be processed into a Knowledge Graph that can then be used to
answer questions.

**Dependencies**: No dependencies. Just network calls & API key required
**Tag maintainer**: @hwchase17
**Twitter handle**: https://github.com/CogniSwitch
**Documentation**: Please check
`docs/docs/integrations/toolkits/cogniswitch.ipynb`
**Tests**: The usual tool & toolkits tests using `test_imports.py`

PR has passed linting and testing before this submission.

---------

Co-authored-by: Saicharan Sridhara <145636106+saiCogniswitch@users.noreply.github.com>

libs/community/langchain_community/agent_toolkits/cogniswitch/toolkit.py

@@ -0,0 +1,40 @@
+from typing import List
+
+from langchain_community.agent_toolkits.base import BaseToolkit
+from langchain_community.tools import BaseTool
+from langchain_community.tools.cogniswitch.tool import (
+    CogniswitchKnowledgeRequest,
+    CogniswitchKnowledgeSourceFile,
+    CogniswitchKnowledgeSourceURL,
+    CogniswitchKnowledgeStatus,
+)
+
+
+class CogniswitchToolkit(BaseToolkit):
+    """
+    Toolkit for CogniSwitch.
+
+    Use the toolkit to get all the tools present in the cogniswitch and
+    use them to interact with your knowledge
+    """
+
+    cs_token: str  # cogniswitch token
+    OAI_token: str  # OpenAI API token
+    apiKey: str  # Cogniswitch OAuth token
+
+    def get_tools(self) -> List[BaseTool]:
+        """Get the tools in the toolkit."""
+        return [
+            CogniswitchKnowledgeStatus(
+                cs_token=self.cs_token, OAI_token=self.OAI_token, apiKey=self.apiKey
+            ),
+            CogniswitchKnowledgeRequest(
+                cs_token=self.cs_token, OAI_token=self.OAI_token, apiKey=self.apiKey
+            ),
+            CogniswitchKnowledgeSourceFile(
+                cs_token=self.cs_token, OAI_token=self.OAI_token, apiKey=self.apiKey
+            ),
+            CogniswitchKnowledgeSourceURL(
+                cs_token=self.cs_token, OAI_token=self.OAI_token, apiKey=self.apiKey
+            ),
+        ]