Project added XIAO-Showdown-2025.md

[rjrishabh]

Description

Related Issue

Closes #<issue_number>

Changes Made

Checklist

• I have read the Contributor License Agreement.
• I have followed the repository's coding guidelines .
• I have checked the action workflow results and they are all passed.

Screenshots (if applicable)

Additional Notes

[github-actions]

All contributors have signed the CLA ✍️ ✅
_{Posted by the CLA Assistant Lite bot.}

[silabs-akosj]

I have read the CLA Document and I hereby sign the CLA behalf on myself, e-mail: [[email protected]]

Hi @rjrishabh,
Could you please remove the outer [ ] from your comment and rerun the failed CLA Assistant workflow?

[rjrishabh]

I have read the CLA Document and I hereby sign the CLA behalf on myself, e-mail: [email protected]

[rjrishabh]

@cla-bot recheck