feat: add PWA to site

[itsacoyote]

Description

Adds PWA functionality to site. Primarily this is to hopefully invalidate any old service worker functions from the previous docs website.

Adding this PR should update and clear whatever lingering PWA features from the old docs site. If we do not want PWA implemented any further, we should be able to easily unregister it properly with the following guide: https://vite-pwa-org.netlify.app/guide/unregister-service-worker.html

[github-actions[bot]]

Visit the preview URL for this PR (updated for commit 506d57d):

https://zksync-docs-staging-5eb09--pr129-add-pwa-features-u2kgpeff.web.app

_{(expires Fri, 21 Jun 2024 13:35:05 GMT)}

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_{Sign: bfaafba5fa82d4f63473aaa76a21fabf1fbb3a11}

[github-actions[bot]]

:tada: This PR is included in version 1.2.0 :tada:

The release is available on GitHub release

Your semantic-release bot :package::rocket: