[repo] chore: Fix env files for Teams chef bot and other cleanup

[corinagum]

Linked issues

closes: #1564

Details

• Add env folder back to chef bot
• Update some image files related to citations
• Update sample.env file for OYD sample

Attestation Checklist

• [x] My code follows the style guidelines of this project

• I have checked for/fixed spelling, linting, and other errors

• I have commented my code for clarity

• I have made corresponding changes to the documentation (updating the doc strings in the code is sufficient)

• My changes generate no new warnings

• I have added tests that validates my changes, and provides sufficient test coverage. I have tested with:

  • Local testing
  • E2E testing in Teams

• New and existing unit tests pass locally with my changes

Additional information

Feel free to add other relevant information below