Add a bar endpoint to the FastAPI application

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Description

We need to add a new endpoint /bar to the FastAPI application. This endpoint should return a JSON object with a key message and a value This is a message from the bar endpoint.

Acceptance Criteria

• A new route /bar should be added to the FastAPI application.
• The route should return a JSON object with message key and This is a message from the bar endpoint as its value.
• The implementation should follow the existing project structure and coding standards.

Files to be Modified

• main.py

Example Response

{
  "message": "This is a message from the bar endpoint"
}

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the response value should be: foo is my enemy

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the response value should be: foo is my friend

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the response value should be: foo is not my friend

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Actually it should be: foo is my friend