whp, virt_whp: migrate from winapi to windows-sys

[justus-camp-microsoft]

Part of #1061, migrate whp and virt_whp off of winapi

[github-actions]

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[Copilot]

Pull request overview

This PR migrates the whp crate from the deprecated winapi crate to windows-sys as part of the effort to unify Windows API dependencies across the OpenVMM codebase (issue #1061). The migration replaces all winapi imports with their windows-sys equivalents while maintaining the same functionality.

Changes:

• Removed the winapi dependency from the whp crate
• Updated all Windows API type imports to use windows-sys with appropriate module paths
• Configured windows-sys features for both main dependencies and dev dependencies

Reviewed changes

Copilot reviewed 6 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
vm/whp/Cargo.toml	Removed winapi dependency; added windows-sys with Win32_Foundation and Win32_System_Power features for main deps, plus Win32_System_Memory and Win32_System_Threading for dev deps
vm/whp/src/partition_prop.rs	Updated BOOL import from winapi::shared::minwindef to windows_sys::core
vm/whp/src/lib.rs	Updated LUID, ERROR_BAD_PATHNAME, and DEVICE_POWER_STATE imports from winapi to windows-sys
vm/whp/src/api.rs	Updated HANDLE, DEVICE_POWER_STATE, and HRESULT imports from winapi to windows-sys
vm/whp/src/abi.rs	Updated LUID import from winapi::shared::ntdef to windows_sys::Win32::Foundation
vm/whp/benches/primitives.rs	Updated memory and threading API imports from winapi to windows-sys
Cargo.lock	Reflects the removal of winapi dependency from whp crate

[github-actions]

At least one Petri test failed.