Add Service.set_launch_protected, get_launch_protected

[winocreative]

Adds launch-protection support to the crate.
A new ServiceLaunchProtected enum (wrapping the four SERVICE_LAUNCH_PROTECTED_* constants) is introduced together with the public helpers Service::set_launch_protected and Service::get_launch_protected, which use SERVICE_CONFIG_LAUNCH_PROTECTED internally. The change is purely additive and does not modify existing APIs.

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This change is 

[kkent030315]

Thank you for this great patch. I am also waiting this PR to be merged!

[kkent030315]

It seems like they are inserting newline after each field so it's better to follow in this enum. Also, you could add doc comments for each field.

Suggested change

	pub enum ServiceLaunchProtected {
	pub enum ServiceLaunchProtected {
	/// No launch protection. The service can be modified or replaced without restriction.
	None = Services::SERVICE_LAUNCH_PROTECTED_NONE,
	/// Launch protection for Windows components.
	Windows = Services::SERVICE_LAUNCH_PROTECTED_WINDOWS,
	/// A lighter version of Windows launch protection.
	WindowsLight = Services::SERVICE_LAUNCH_PROTECTED_WINDOWS_LIGHT,
	/// Launch protection used by antimalware (ELAM) services.
	AntimalwareLight = Services::SERVICE_LAUNCH_PROTECTED_ANTIMALWARE_LIGHT,
	}

[kkent030315]

I think you can turn this whole function into TryFrom trait impl.

impl TryFrom<u32> for ServiceLaunchProtected {
    type Error = Error;

    fn try_from(value: u32) -> Result<Self, Self::Error> {
        match value {
            Services::SERVICE_LAUNCH_PROTECTED_NONE => Ok(ServiceLaunchProtected::None),
            Services::SERVICE_LAUNCH_PROTECTED_WINDOWS => Ok(ServiceLaunchProtected::Windows),
            Services::SERVICE_LAUNCH_PROTECTED_WINDOWS_LIGHT => {
                Ok(ServiceLaunchProtected::WindowsLight)
            }
            Services::SERVICE_LAUNCH_PROTECTED_ANTIMALWARE_LIGHT => {
                Ok(ServiceLaunchProtected::AntimalwareLight)
            }
            _ => Err(Error::ParseValue(
                "Invalid launch protection value",
                ParseRawError::InvalidInteger(value),
            )),
        }
    }
}

[kkent030315]

No allocation is actually required here since the size is known at compile-time. You can remove vec! so that it forces data to be on a stack.

Suggested change

	let mut data = vec![0u8; std::mem::size_of::<Services::SERVICE_LAUNCH_PROTECTED_INFO>()];
	let mut data = [0u8; std::mem::size_of::<Services::SERVICE_LAUNCH_PROTECTED_INFO>()];

[kkent030315]

Put an newline between function definitions :)