gh authentication

Best way to work with GitHub repos, as of summer 2022, is with the gh command line tool I believe.

Install it on any platform by following instructions here: https://github.com/cli/cli

After you have installed it you can authenticate `gh` with the following command:

```
gh auth login
```

You can install it on Ubuntu with the following commands:

```
type -p curl >/dev/null || sudo apt install curl -y
curl -fsSL https://cli.github.com/packages/githubcli-archive-keyring.gpg | sudo dd of=/usr/share/keyrings/githubcli-archive-keyring.gpg \
&& sudo chmod go+r /usr/share/keyrings/githubcli-archive-keyring.gpg \
&& echo "deb [arch=$(dpkg --print-architecture) signed-by=/usr/share/keyrings/githubcli-archive-keyring.gpg] https://cli.github.com/packages stable main" | sudo tee /etc/apt/sources.list.d/github-cli.list > /dev/null \
&& sudo apt update \
&& sudo apt install gh -y
```