Create OpenAI API Integration for Parsing Course Outlines

Add functionality to parse plain text course outlines using the OpenAI GPT 3.5 API.

Complete:

• Get OpenAI API Token
• Generate API prompt as per #1 (closed)
• Make an API request to the OpenAI API Chat Completions endpoint with the correct payload
• Process the response into a list of task objects
• Add error handling for incorrect responses from the API