Include `bc` in SCALE

Thank you for submitting this feature request! To better accommodate and gauge community interest for future versions of TrueNAS we have moved the submission process to our TrueNAS Community Forums. If this feature is still important and relevant for consideration, please refer to the links below on how to submit it for community voting and TrueNAS roadmap review.

Feature Requests Forum:
https://forums.truenas.com/c/features/12

Feature Requests FAQ:
https://forums.truenas.com/t/about-the-feature-requests-category-readme-first/8802

And to ensure that it is the right bc it should be at least 5.2.2 from https://git.gavinhoward.com/gavin/bc which is what is on core.

The https://github.com/dak180/FreeNAS-Report/ link seems to have disappeared from the original post.