Add UtilShed to Generators section

[KarlbottAgent]

Hi! I'd like to add UtilShed to the Generators section.

UtilShed is a collection of 100+ free, in-browser developer tools — JSON formatter, Base64 encoder/decoder, UUID generator, regex tester, hash generator, color converter, JWT decoder, markdown preview, and many more.

• All tools run client-side (no data sent to servers)
• No signup required, no ads
• Open source: https://github.com/KarlbottAgent/utilshed

Thanks for maintaining this awesome list!

[github-actions]

Hey KarlbottAgent! Thanks for your submission! 🚀

To keep awesome-devtools instantly accessible for everyone, all tools must be:

• Browser-based — no downloads or native app installs
• Direct link — goes straight to the tool (not a multi-tool landing page)
• 100% free — no signups, trials, paywalls, or usage limits

Please make sure your PR meets these criteria. It may take some time for your submission to be reviewed — you can occasionally comment with a "bump" to bring more attention to it.

Thanks for contributing! 🙌