feat: support status fn for StatusManager

[greenhat616]

Close #5

use a enum ServiceStatus to represent the services state:

pub enum ServiceStatus {
    NotInstalled,
    Running,
    Stopped(Option<String>), // Provide a reason if possible
}

• finish all related managers
• add test suits
• add decoding support for among differnet windows code page

[greenhat616]

@jacderida Ready to CI run. Thx

[chipsenkbeil]

I just realized this has been sitting here. @jacderida @greenhat616 this is something ready for review?

[greenhat616]

@chipsenkbeil Hi. I think it is ready for review, and i have use this patch in https://github.com/LibNyanpasu/nyanpasu-service.

I have manually test the all platform expect the rc.d which I don't own the test environment
And I changed the test suite to ensure the service status current while the service state changed(install, start, stop, uninstall etc).

[chipsenkbeil]

@greenhat616 hm, I'm not sure why the automated tests aren't running. The button for me to trigger them seems to be missing.

I'll take a look at running manually this weekend and get this merged in. Sorry for waiting so long!

[chipsenkbeil]

@greenhat616 ran parts of it this weekend. Going to merge and anything that needs to change before the next release can sneak in over the week.

Thanks again for the PR!