feat: add SiteOne Crawler

[janreges]

Adding a new application

Checklist

• [x] I have read and completed the checklist of Submission Guide
• [x] My application is open-source and has been created for at least 20 days
• [ ] My application is closed-source and here is a proof it uses Electron:

Description

SiteOne Crawler is a useful open-source tool built on Electron+Svelte that performs an in-depth analysis of a website and generates a detailed HTML report with SEO, security, performance, accessibility and best-practices audits.

Another useful functionality is the ability to export the entire website to an offline form, or the sitemap generator.

I've attached a GIF with the UI animation below, and I've also generated an HTML report for electronjs.org to give you an idea of the functionality: https://crawler.siteone.io/html/2024-08-17/forever/7-4og4xq0g-a1aetnub9.html

Thanks for the merge even though I know from 2023 adding apps is temporarily suspended.