feature request: Allow overriding TokenValidationParameters

[VictorioBerra]

What problem did you meet?

https://github.com/logto-io/csharp/blob/master/src/Logto.AspNetCore.Authentication/extensions/AuthenticationBuilderExtensions.cs#L115

I would like to NameClaimType to "username" instaed of "name".

Describe what you'd like Logto to have

I should be able to configure and override all OpenIdConnectOptions.

[gao-sun]

good call

[VictorioBerra]

Just a heads up for anyone who finds this, until there is an official option I simply copy and pasted the AuthenticationBuilderExtensions into my own app and changes what I needed to make it work.