Add Cloudflare Pages/Workers to the Free Hosting section

[Sylphritz]

I'm adding them as 2 separate links since they're technically 2 different kinds of hosting services. Workers is for hosting serverless functions and Pages is for hosting websites (but it uses Workers internally).

• Cloudflare Pages
• Cloudflare Workers

I don't want to create 2 separate pull requests since it's kind of overkill.