chore(crab-usb): release v0.9.0

[ZR233]

🤖 New release

• crab-usb: 0.8.2 -> 0.9.0 (⚠ API breaking changes)

⚠ crab-usb breaking changes

--- failure enum_no_repr_variant_discriminant_changed: enum variant had its discriminant change value ---

Description:
The enum's variant had its discriminant value change. This breaks downstream code that used its value via a numeric cast like `as isize`.
        ref: https://doc.rust-lang.org/reference/items/enumerations.html#assigning-discriminant-values
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/enum_no_repr_variant_discriminant_changed.ron

Failed in:
  variant Event::Stopped 2 -> 3 in /tmp/.tmpUaEUaU/CrabUSB/usb-host/src/backend/ty/mod.rs:18

--- failure enum_variant_added: enum variant added on exhaustive enum ---

Description:
A publicly-visible enum without #[non_exhaustive] has a new variant.
        ref: https://doc.rust-lang.org/cargo/reference/semver.html#enum-variant-new
       impl: https://github.com/obi1kenobi/cargo-semver-checks/tree/v0.46.0/src/lints/enum_variant_added.ron

Failed in:
  variant Event:TransferActivity in /tmp/.tmpUaEUaU/CrabUSB/usb-host/src/backend/ty/mod.rs:17

Changelog

0.9.0 - 2026-05-08

Fixed

• improve xHCI CAM transfer handling (#77)

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