Set up a WIP instance of VS Code in gitlab-org
## Goal
The first step in getting the new Web IDE running is to get the VSCode project loaded into gitlab-org. This iteration doesn't even have to edit files.
The goal is to have an instance of VS Code running in `gitlab-org` behind a feature flag that can open a project, access the filesystem, and allow you to open and navigate files in the editor. This will allow us to iterate on the feature in a production environment and get feedback faster.
epic