Rename project to identity-design-system, scope package to 18F

[aduth]

• Improve discoverability for people searching for the Login.gov Design System
• Scope package to organization to adhere to best practices

Follow-up:

• Rename repository in GitHub repository settings.
• Consider resetting version count to 1.0.0 in package.json

[zachmargolis]

LGTM

Consider resetting version count to 1.0.0 in package.json

I think it makes sense to keep the numbers going up, because it's the same git repo with the same history

[aduth]

Consider resetting version count to 1.0.0 in package.json

I think it makes sense to keep the numbers going up, because it's the same git repo with the same history

Yeah, on second thought, a reset is probably not worth it. It also runs contrary to my own reluctance to accept "big major version = bad", we aren't at risk of running out of numbers.

[aduth]

Renaming the repository might require some more work, so I'm going to limit the changes to package references for now and merge.