Add carbon components

[tworkman512]

What kind of change does this PR introduce?

• Added carbon-components-react, carbon-components, and carbon-icons as dependencies.
• Added basic tile Carbon react component in the About page.
• Added carbon-component global styles.

Did you write unit test?

No, I'm not sure how to do that and could use some help if that's necessary here.

Summary

Carbon React components and styles must be imported to be used in creating a Gatsby site. See issue here for more context: https://github.com/ibm-frontend/gatsby-starter-carbon/issues/6

Other information

Please note, that I chose to import the tile Carbon styling directly here temporarily until we add the global styling for Carbon.

Also, I'm not 100% certain that I added the Carbon global styles correctly and would appreciate someone checking that and offering any guidance if needed. I didn't remove the Material Design styling yet, as that would break pretty much every style in the UI at this point.

[diego-codes]

Sorry one last comment, can you delete the package-lock.json file and create a yarn.lock file instead? We're going to be using yarn for this project.

[tworkman512]

@diego-codes made the requested changes and ready for review.