In order to set up the server to allow imports, one needs to create a
[Github Access token](https://docs.github.com/en/authentication/keeping-your-account-and-data-secure/managing-your-personal-access-tokens). A fine-grained access token with only reading rights for public
repos will suffice.
You need to set the environment variables `LEAN4GAME_GITHUB_USER` and `LEAN4GAME_GITHUB_TOKEN`