Create new section on how to use HTTP in components

[hakilebara]

Create a new section in Creating Components that focuses on using HTTP in components.
It includes a Rust guide on how to create a basic Hello, world! HTTP component using wstd.

 ├── Creating Components
 │   └── Building a simple component
 │   └── Importing and reusing components
 │   └── Creating Runnable components
 │   └── Using WIT resources
+│   ├── Using HTTP in components
+|   |   └── Rust

#182

[kate-goldenring]

LGTM! Ran through it all in just a minute. Thank you for adding this! One small nit suggestion

[kate-goldenring]

One small reword and then i think we are good to go

[kate-goldenring]

closes #182

[vados-cosmonic]

LGTM 🚀

I left a few nits -- please feel free to rewrite/reword things as you'd like. I've also tried to add more links to things that readers may not be immediately familiar with (for example if they just landed directly on this page).

[hakilebara]

Thank you both, your feedback was very instructive. All suggestions have been integrated.