Add Copilot Blogs Post once published

[jwafu]

Once we get the first blog post published we need to get this shared out on the readme :) just a reminder here.

Will want to get part one and part two added to the readme.

• [ ] Part 1: https://code.pieces.app/blog/build-your-own-copilot-in-less-than-10-minutes-with-pieces-os-client
• [ ] Part 2: https://code.pieces.app/blog/build-your-own-copilot-with-local-context
• [ ] Part 3: https://code.pieces.app/blog/how-to-build-a-copilot-using-local-llms-with-pieces-client
• [ ] Overview: https://code.pieces.app/blog/build-your-own-open-source-copilot-with-pieces