docs: add Azion as a deployment option

[VitorAEltz]

#Pull Request Title: feat-add-azion-deployment

##Description:

This pull request adds documentation for deploying a Docusaurus site to Azion. The new section provides detailed steps for three deployment methods: starting from a template, importing from GitHub, and using the Azion CLI. Changes: File: website/docs/deployment.mdx Summary of Changes: Added a new section titled "Deploying to Azion". Included detailed instructions for: Starting from a template in the Azion Console. Importing a project from GitHub. Deploying using the Azion CLI.

Pre-flight checklist

• [x] I have read the Contributing Guidelines on pull requests.
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Motivation

Test Plan

Test links

Deploy preview: https://deploy-preview-10481--docusaurus-2.netlify.app/