Adding folders to organize samples

[fosteramanda]

Adding folders to organize Agent samples. Agent samples will be organized by {language}/{sdk}.

Folder Structure:

• Organizing Agent samples by {language}/{sdk}
• Example: python/project-sdk

Checklist

• I have read the contribution guidelines
• I have coordinated with the docs team (mldocs@microsoft.com) if this PR deletes files or changes any file names or file extensions.
• This notebook or file is added to the CODEOWNERS file, pointing to the author or the author's team.

[fosteramanda]

@hemantmsgh Could you please review this PR as well. Thanks!