chore: Update CodeStream licensing and third party notices information directly in docs

[CalvinAllen]

The CodeStream code repository is private, so we can no longer reference it via public links and instead need to embed the content directly for the license and third party notices.

[github-actions]

Hi @CalvinAllen 👋

Thanks for your pull request! Your PR is in a queue, and a writer will take a look soon. We generally publish small edits within one business day, and larger edits within three days.

Please ensure the propsed changes look good by building it first in your local environment. Refer to this contribution guide to get the site up and running in your local.

If you really require a preview url, reach out to one of the writers and they will generate one for you.

[adutta-newrelic]

netlify build

[WriteMayur]

netlify build fork

[svc-docs-eng-opensource-bot]

✅ Your PR has been mirrored to our repository as PR #21972.
Commit: c36e574cf886b34b110289b09bddc2a72a6c5cf1 (c36e574)
Our workflows will run in the mirrored PR linked above.
🚀 If the build is successful, a Netlify preview will be available shortly at: https://CalvinAllen-chore-fix-codestream-licen--docs-website-netlify.netlify.app