Updated Cogniswitch docs (#8809)

* CogniSwitch Integration

- QueryEngine
- ToolSpec
- Tests
- Example Notebook
- Inits

* Delete llama_index/tools/tool_spec/cogniswitch directory

Removing ToolSpec as per Jerry's recommendation

* Add files via upload

* Update __init__.py

Removed CogniswitchToolSpec import & __all__

* Nits for CSQueryEngine

* updated the files after checking format, linting

* updated cogniswitch query engine and notebooks

* Update CogniswitchQueryEngine.ipynb

Nits, language

* Update CogniswitchToolSpec.ipynb

Nits, language

* updated the cogniswitch_query_engine file

* updated the test cogniswitch_query_engine filename

* removed unecessary imports from the code files

* added cogniswitch query engine notebook for docs

* updated the notebook to pass the linting

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Co-authored-by: JT <JoshuaT@aikonlabs.com>
Co-authored-by: CogniJT <131272471+CogniJT@users.noreply.github.com>