Added to `docs/how_to/tools_runtime` as a proof of concept, will apply
everywhere if we like.
A bit more compact than the default callouts, will help standardize the
layout of our pages since we frequently use these boxes.
<img width="1088" alt="Screenshot 2024-07-23 at 4 49 02 PM"
src="https://github.com/user-attachments/assets/7380801c-e092-4d31-bcd8-3652ee05f29e">
