Updated ASP.NET Core examples to use Top Level Statements

[m3nax]

While studying the examples, I modified the initialization of the various services to use Top Level Statements to be more similar to the current Microsoft documentation for ASP.NET Core.

[kevinchalet]

Hey @m3nax,

Thanks for your PR: great initiative! 👏🏻

Note: the console, WPF and WinForms client samples could also benefit from some "minimal host" love, but while dapplo/Dapplo.Microsoft.Extensions.Hosting#53 was recently merged, no stable version including the necessary APIs has been released on NuGet yet. I'll keep an eye on future updates and revamp the samples so they are consistent with the ones you've converted as part of this PR.

Cheers.

[m3nax]

Hey @m3nax,

Thanks for your PR: great initiative! 👏🏻

Note: the console, WPF and WinForms client samples could also benefit from some "minimal host" love, but while dapplo/Dapplo.Microsoft.Extensions.Hosting#53 was recently merged, no stable version including the necessary APIs has been released on NuGet yet. I'll keep an eye on future updates and revamp the samples so they are consistent with the ones you've converted as part of this PR.

Cheers.

Thank you for taking the time to review my pr

[kevinchalet]

Merged. Congrats for your first contribution to OpenIddict 👏🏻 🎉