docs: add Azure SWA as deployment option

[nitya]

I've linked to the dev.to article (which is a timestamped stable version) - to be consistent with other deployment snippets.

The dev.to article references this GitHub repo and this#30DaysOfSWA site which was the inspiration for writing this article. The repo contains the code for the demo, and its README is the canonical source for the article, in case relevant.

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• I have read the Contributing Guidelines on pull requests.
• If this is a code change: I have written unit tests and/or added dogfooding pages to fully verify the new behavior.
• If this is a new API or substantial change: the PR has an accompanying issue (closes #0000) and the maintainers have approved on my working plan.

Motivation

Test Plan

Test links

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

Related issues/PRs

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[github-actions]

⚡️ Lighthouse report for the deploy preview of this PR

URL	Performance	Accessibility	Best Practices	SEO	PWA	Report
/	🟢 93	🟢 100	🟢 100	🟢 100	🟢 90	Report
/docs/installation	🟠 84	🟢 99	🟢 100	🟢 100	🟢 90	Report

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