docs(README.md): added Cloudflare backing information and a call to action

Author: xy-241

README.md

@@ -1,3 +1,12 @@
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 <p align="center">
   <img align="center" width="320" src="https://github.com/xy-241/CS-Notes/assets/47915643/97eebd7c-cd9d-4e74-bcba-fef04f640edd" />
 
@@ -11,6 +20,8 @@
 
 <br>
 
+> CS Notes is now backed by [Cloudflare](https://www.cloudflare.com/en-gb/)!
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 > Click &#9733; if you like the project. I really appreciate it 🙏🏻!