Create a project list component

We are starting to use this theme across many of our working group sites and many of these WG need to create a Project list page.

For example, https://github.com/jakartaee/jakartaee.github.io/pull/159

We must define an easy way to manage and create this page.

I think we need to start by creating an API endpoint on projects.eclipse.org that will allow working group sites to fetch data about every project in the WG.

We would then use this data to generate a project list page. I would expect project links to go their project page on projects.eclipse.org but we should also include a link to the project website.