Add readme for imoc

identity-model-oidc-client/README.md

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+## About IdentityModel.OidcClient
+
+This repository contains several libraries for building OpenID Connect (OIDC) native
+clients. The core `Duende.IdentityModel.OidcClient` library is a certified OIDC relying party and
+implements [RFC 8252](https://tools.ietf.org/html/rfc8252/), "OAuth 2.0 for native
+Applications". The `Duende.IdentityModel.OidcClient.Extensions` provides support for
+[DPoP](https://datatracker.ietf.org/doc/html/rfc9449) 
+extensions to IdentityModel.OidcClient for sender-constraining tokens.
+
+## Samples
+OidcClient targets .NET Standard, making it suitable for .NET and .NET
+Framework. It can be used to build OIDC native clients with a variety of .NET UI tools.
+The [samples](https://github.com/DuendeSoftware/foss/tree/main/identity-model-oidc-client/samples)
+shows how to use it in 
+- .NET MAUI
+- WPF with the system browser
+- WPF with an embedded browser
+- WinForms with an embedded browser
+- Cross Platform Console Applications (relies on kestrel for processing the callback)
+- Windows Console Applications (relies on an HttpListener - a wrapper around the windows HTTP.sys driver)
+- Windows Console Applications using custom uri schemes
+
+## Documentation 
+
+More documentation is available
+[here](https://docs.duendesoftware.com/foss/identitymodel.oidcclient/).
+
+
+## Certification
+OidcClient is a [certified](http://openid.net/certification/) OpenID Connect
+relying party implementation.
+
+## Feedback
+
+Duende.IdentityModel.OidcClient is released as open source under the 
+[Apache 2.0 license](https://github.com/DuendeSoftware/foss/blob/main/LICENSE). 
+Bug reports and contributions are welcome at 
+[the GitHub repository](https://github.com/DuendeSoftware/foss).