[Keyboard] Add/Update Pimoroni keybow 2040

[willoucom]

This is a PR to try to continue the work done on https://github.com/qmk/qmk_firmware/pull/21481

I am not the original author of the firmware.

Description

This is a continuation, I tries to update files according to the last unresolved request changes.

Types of Changes

• [ ] Core
• [ ] Bugfix
• [ ] New feature
• [ ] Enhancement/optimization
• [x] Keyboard (addition or update)
• [ ] Keymap/layout/userspace (addition or update)
• [ ] Documentation

Checklist

• [x] My code follows the code style of this project: C, Python
• [x] I have read the PR Checklist document and have made the appropriate changes.
• [ ] My change requires a change to the documentation.
• [x] I have updated the documentation accordingly.
• [x] I have read the CONTRIBUTING document.
• [ ] I have added tests to cover my changes.
• [x] I have tested the changes and verified that they work and don't break anything (as well as I can manage).

[willoucom]

Hello @zvecr Thanks for your review, I fixed all the issues.

[willoucom]

Missed a few things on the last review.

No problem