Added example for Legal Simplifier

[techmaharaj]

Adding example for Legal Simplifier, an app that simplifies legal documents. For larger documents, this has the ability to slipt them into chunks to fit within the token limit.

This PR also contains the legal.pdf file and the generated summary.md file.

[cjellick]

@g-linville is going to give this a review

[techmaharaj]

I've fixed all the review comments, @cjellick @g-linville