Extract `install` command [semver:minor]

[jasonkarns]

closes #13

• Adds install command for install-only (without authentication or configuration)
• DRY up the auth/config step in setup command to leverage the install command
• Renames setup script as configure.sh now that it doesn't do installation
• Includes install-only example

[jasonkarns]

I added an explicit assertion in the integration test, but I'm not sure how to trigger the circle workflow. They don't appear to be running on PRs.

[gmemstr]

@jasonkarns Due to how orb tests work, we have to manually trigger them - I'm doing so now :)

[KyleTryon]

@jasonkarns Thank you for the contribution! I had not known of any use-cases at the time of creation that would work under different scopes, thank you for sharing this and resolving the issue. The error reported here should be something operational due to a security concern, attempting to resolve it now.

[jasonkarns]

@KyleTryon i appreciate it! you'll notice that I also opened a feature request against the github cli itself that would (hopefully) allow one to invoke gh auth status with reduced scopes. https://github.com/cli/cli/issues/4827

If you have thoughts on how that hypothetical feature should work (as it relates to CI usage), I would welcome your input on that issue.

[motionsuggests]

@jasonkarns This is great! It will make implementing https://github.com/CircleCI-Public/github-cli-orb/issues/9 much easier.

[motionsuggests]

Any word on this?

[KyleTryon]

Apologies @motionsuggests, many orbs to get to. Taking a look at this now/today

[KyleTryon]

Apologies again. Just got the build error resolved and all of the tests have passed. Thank you @jasonkarns Pushing this now!