Add a new ZVF bandwith setting to FOC advanced settings tab.

[lolwheel]

This is an accompanying change to one proposed to the bldc project.

[github-actions[bot]]

CLA Assistant Lite bot:
Thank you for your submission, we really appreciate it. Like many open-source projects, we ask that you sign our Contributor License Agreement before we can accept your contribution. You can sign the CLA by just posting a Pull Request Comment same as the below format.

---

I have read the CLA Document and I hereby sign the CLA

---

_{You can retrigger this bot by commenting recheck in this Pull Request}

[Relys]

https://github.com/vedderb/bldc/pull/770