initial commit for Azure RAG cookbook

[maxreid-openai]

Summary

Briefly describe the changes and the goal of this PR. Make sure the PR title summarizes the changes effectively.

Motivation

Why are these changes necessary? How do they improve the cookbook?

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[justonf]

Added a comments primarily to the notebook.

Overall, it looks very in-depth, but it's also a bit overwhelming. Some high level recommendations:

1. Try to add some type of map or guidance at the beginning that gives some overview for all of the content that'll be reviewed.
2. There's a few cases where code blocks are broken up by single lines of text; we should try to consolidate these so it doesn't feel as choppy
3. The very end doesn't feel finished; could you add a summary section and review what was demonstrated?

[justonf]

Thanks for adding the sections!

Added a few more comments. Another high-level - there's a lot of repetitive phrases throughout the cookbook - "In this code block" "In this section" "the below section" "Feel free to".

Consider removing these references since they reduce clarity and conciseness, and tend to be more passive.

[justonf]

Looks good to me. There's still points where more polish can be added, if you have the time to improve them, but this should be good to put up now.

Feedback areas:

• Code blocks are difficult to read due to the comments - consolidating these comments into block comments or adding more intentional spacing.