Sweep: Update readme to start with a friendly message that raises awarness about climate change

[Infrared1029]

Description

This pull request updates the README.md file to include a new section at the top that promotes awareness about climate change. The added content is designed to engage visitors by encouraging collective action towards environmental protection.

Summary

• File Updated: README.md
  • Added a centered paragraph with a bold title "🌍 Climate Change Awareness Month 🌍"
  • Included an italicized message encouraging small actions for a big difference in protecting our planet.
  • Inserted a thematic horizontal rule to separate the new section from existing content.

Fixes #1.

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[Infrared1029]

Rollback Files For Sweep

• [ ] Rollback changes to README.md

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