Content migration - create "Using service workers with Gatsby" doc

[shannonbux]

Issue Context

This issue is part of the content migration project (#8103), which is meant to take existing content and repurpose it so it's easier to find in the docs.

Motivation

We are doing this because many people have written excellent content that we want to canonize and maintain so more people can find it and benefit from it.

Steps to resolve this issue

Review the Gatsby docs approach

• Read the Style Guide and follow it in order for your PR to be accepted. Pay special attention to the templates.
  • Style Guide: https://www.gatsbyjs.org/docs/gatsby-style-guide/
  • Docs Templates: https://www.gatsbyjs.org/docs/templates/

Draft the doc

• Create a new file named using-service-workers-with-gatsby.md in the docs source directory.
• Begin the newly-created markdown file with the following frontmatter:

---
title: Using service workers with Gatsby
---

• Use the following reference material as a primary starting point to draft the new doc:

https://www.gatsbyjs.org/packages/gatsby-plugin-offline/
https://www.gatsbyjs.org/docs/progressive-web-app/#it-must-implement-a-service-worker
https://www.gatsbyjs.org/blog/gatsby-v1/#service-worker-and-offline-support

Make sure you rewrite and adjust the content to follow the format listed in these resources:

• Docs Templates: https://www.gatsbyjs.org/docs/templates/
• Example of a guide to imitate: https://www.gatsbyjs.org/docs/deploying-to-s3-cloudfront
• Review additional reference materials you can find through google searches, and integrate any additional detail, if helpful.
• Add a link to the doc-links.ymlfile so your newly created doc shows up in the sidebar navigation of the .org site!

Open a pull request

• Open a pull request with your work, including the words "closes Content migration - create "Using service workers with Gatsby" doc #8849"

[thisizkp]

I would like to work on this

[thisizkp]

@shannonbux @NickyMeuleman Hey guys, sorry for this. Got caught up with work, something priority came up. Will not able to work on this right at the moment. (for one week or so).

I don't want to block this issue. Let anyone else pick this up. Also lets remove the label Claimed. :)

[NickyMeuleman]

No problem, thanks for letting us know. 👍
We hope to see you here again in the future!

[j33n]

Hello @shannonbux @NickyMeuleman, I would be happy to take this up

[ganny26]

Hi @shannonbux I have already worked and gave PR