Add NetEase provider

[HahaMango]

Hi, I implemented a NetEase provider, also add the test code.

Hot to use:

builder.AddNetEase(options => 
{
    options.ClientId = "your client Id ";
    options.ClientSecret = "your client secret ";
});

[martincostello]

As an OAuth provider, HTTPS needs to be used everywhere.

[HahaMango]

@martincostello Yes, according to the document it's just a user name, not a mailbox, my fault. I've changed it.

[martincostello]

Thanks again for your contribution @HahaMango 🎉

[martincostello]

This provider is now available from NuGet.org: https://www.nuget.org/packages/AspNet.Security.OAuth.NetEase/3.1.0