Added DC3 Projects

[dc3-tsd]

Thanks for submitting a pull request! Below are a few things you can do to help us more quickly review your changes.

Checklist

I have…

• run the application locally (./scripts/serve) and verified that my changes behave as expected.
• run the build process locally (./scripts/build) and make sure it builds correctly.
• run the test suite (./scripts/test) and verified that all tests pass.
• summarized below my changes and noted which issues (if any) this pull request fixes or addresses.
• thoroughly outlined below the steps necessary to test my changes.
• attached screenshots illustrating relevant behavior before and after my changes.
• read, understand, and agree to the terms described in CONTRIBUTING.md.
• added my name, email address, and copyright date to CONTRIBUTORS.md.

Summary of Changes

Adds Department of Defense Cyber Crime Center (DC3) open source project to tracked data.

Testing

Verified JSON schemas as no code changes were made.

Screenshots

Attach relevant before and after screenshots here.