feat: Add/reorder Linux skill icons

[LachyTech]

This commit adds skill categories for Embedded and Operating Systems, and adds additional icons for Fedora, Ubuntu and Yocto Project.

[vercel[bot]]

@LachyTech is attempting to deploy a commit to the danielcranney's projects Team on Vercel.

A member of the Team first needs to authorize it.

[danielcranney]

Thanks for this @LachyTech - another great PR! 🥳