Fix/Improve my static Gatsbyjs site

Important Note: This project uses GatsbyJS [login to view URL] I am OK if the project takes time but you should be OK in learning new things and dive deep into the relevant technology which also may take time and effort. General current site in [login to view URL] is implemented with Gatsby but it has a place for few improvements Task 1 - Currently (about 4 pages) most pages are implemented as JSX page which contains all the HTML, as the content is rather simple will be better to convert the content to markdown 2 - Currently, [login to view URL] is one page that contains 5 different content items (articles) will be good to separate each product to a markdown file and display to page by reading the separate files and in addition have a direct link to each product (which does not include now) 3 - Same for [login to view URL], separate each partner to a markdown file to simplify future content editing 4 - Convert CSS to use styled-components (CSS In JS) 5 - Enable service worker gatsby should support this but it is not enabled right now 6 - Enable image progressive download using gatsby plugin [login to view URL] 7 - Fix bug where click on partially loaded image open the image and not the gallery 8 - Improve performance as much as possible, check the auditing tab in chrome dev tools