virtio_ids.h bindings

[Ablu]

Summary of the PR

Some cleanup, then addition of virtio_ids.h

Requirements

Before submitting your PR, please make sure you addressed the following requirements:

• [x] All commits in this PR are signed (with git commit -s), and the commit message has max 60 characters for the summary and max 75 characters for each description line.
• [x] All added/changed functionality has a corresponding unit/integration test.
• [x] All added/changed public-facing functionality has entries in the "Upcoming Release" section of CHANGELOG.md (if no such section exists, please create one).
• [x] Any newly added unsafe code is properly documented.

[Ablu]

turning into draft, blocked by: https://github.com/rust-vmm/vm-virtio/pull/249

[Ablu]

Unblocked, rebased on the already merged commit to bump to 6.4.

[Ablu]

CI had network issues, force-push to trigger rebuild