DOC: Add Button for downloading Resonate from Google Play Store to the Readme

[M4dhav]

Issue with current documentation:

Now that Resonate is live on Google Play, we should add a button to show that and download the latest build of Resonate from Google Play.

[TheGoodUser]

📋 Summary

Added a download section to the README with Google Play Store button to improve user experience and app discoverability.

🔄 Changes Made

• Included Google Play Store download button with hover animations

📸 Preview

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This is my first contribution to this project! 🎉

[M4dhav]

Closing as fixed by #520