Refactoring and Feature Enhancement for the MSRC Patch Tuesday Vulnerability Report Generator

[tmlgcq]

This pull request introduces several improvements to the code base aimed at enhancing the readability, maintainability, robustness, and usability of the MSRC Patch Tuesday Vulnerability Report Generator. The major changes include:

1. Modularization: The main script has been broken down into smaller, more manageable functions. Each function serves a distinct purpose, improving code readability and reusability.

2. Enhanced Error Handling: Improved error handling, particularly around the HTTP request to the MSRC API. Now, the script provides more informative error messages and handles exceptions gracefully.

3. Input Validation: The date format checker has been improved to provide better validation of user input.

4. Code Comments & Docstrings: Added comprehensive code comments and docstrings explaining the purpose of functions, their inputs, outputs, and overall functionality. This makes the script easier to understand and maintain.

5. Code Formatting: The script now closely follows PEP 8 style guide, enhancing its readability.

6. Refactoring: Refactored repetitive code into functions to reduce redundancy.

7. Automatic Date Fetching: Modified the script to automatically use the current month and year (in 'YYYY-mmm' format) if the user provides no date. This new feature makes the tool more user-friendly and intuitive.

These changes make the script more robust, user-friendly, and intuitive, ensuring it provides reliable and accurate information to the users.

[kevthehermit]

Thanks for this it looks great, give me a few days to review then I will look to get it merged