mshv-bindings does not export `vmm_sys_util::errno::Error`

[ludfjig]

many mshv-bindings functions return type Result<T> = std::result::Result<T, vmm_sys_util::errno::Error>

To deal with this error type, hyperlight uses thiserror, and we define a variant like so

    /// vmm sys Error Occurred
    #[error("vmm sys Error {0:?}")]
    #[cfg(target_os = "linux")]
    VmmSysError(#[from] vmm_sys_util::errno::Error),

However, because mshv-bindings does not reexport vmm_sys_util::errno::Error, we need to bring in our own dependency on vmm_sys_util, which may or may not be the same version as the one mshv-bindings use. This can lead to the crates breaking unexpectedly (and has done before).

I propose that you add a pub reexport of vmm_sys_util::errno::Error to make this easier.

Feedback appreciated