Add docs to make adding Snippets more easier

[santoshyadavdev]

We need to add a page on how to add a snippet,

The page can have more details on how to add a new snippet, which will cover mdx syntax and where to add the page for new snippets.

[TomWebwalker]

Hi @santoshyadavdev Can I take it?

[santoshyadavdev]

Sure @TomWebwalker 😊