[icons] feat: "intel" icon

[gredman2018]

Fixes #0000

Checklist

• Includes tests
• Update documentation

Changes proposed in this pull request:

Added a the new intelligence icon with 16px and 20px

Reviewers should focus on:

Everything renders correctly at both sizes!

Screenshot

[palantirtech]

Thanks for your interest in palantir/blueprint, @gredman2018! Before we can accept your pull request, you need to sign our contributor license agreement - just visit https://cla.palantir.com/ and follow the instructions. Once you sign, I'll automatically update this pull request.

[adidahiya]

@CPerinet to confirm design approval 👍🏽 / 👎🏽 ?

[adidahiya]

sorry about the failing deploy-preview job -- I'll fix that -- here's the docs preview link: https://output.circle-artifacts.com/output/job/7ebf1edd-d362-4194-9fda-f8170c8baec9/artifacts/0/packages/docs-app/dist/index.html#icons

[gredman2018]

Hi! When/how can I fix circleci deploy-preview failing?

[adidahiya]

deploy-preview is returning a failing exit code because it's building on a fork and doesn't have the necessary environment variables. That's not a problem with your PR, just an issue with the preview script right now. It should exit gracefully with a successful exit code -- I'm going to fix that in a separate PR. In the meantime, I'll merge this PR, it's good to go