Added OpenID endpoints tests and documentation

docs/api/models.md

@@ -14,3 +14,66 @@ public sealed class UserPasswordValidation {
     public string Password { get; set; }
 }
 ```
+
+## OpenIdConfiguration
+```csharp
+public sealed class OpenIdConfiguration {
+    public string Issuer { get; set; }
+    public string AuthorizationEndpoint { get; set; }
+    public string TokenEndpoint { get; set; }
+    public string UserinfoEndpoint { get; set; }
+    public string EndSessionEndpoint { get; set; }
+    public string IntrospectionEndpoint { get; set; }
+    public string RevocationEndpoint { get; set; }
+    public string DeviceAuthorizationEndpoint { get; set; }
+    public List<string> ResponseTypesSupported { get; set; }
+    public List<string> ResponseModesSupported { get; set; }
+    public string JwksUri { get; set; }
+    public List<string> GrantTypesSupported { get; set; }
+    public List<string> IdTokenSigningAlgValuesSupported { get; set; }
+    public List<string> SubjectTypesSupported { get; set; }
+    public List<string> TokenEndpointAuthMethodsSupported { get; set; }
+    public List<string> AcrValuesSupported { get; set; }
+    public List<string> ScopesSupported { get; set; }
+    public bool RequestParameterSupported { get; set; }
+    public List<string> ClaimsSupported { get; set; }
+    public bool ClaimsParameterSupported { get; set; }
+    public List<string> CodeChallengeMethodsSupported { get; set; }
+}
+```
+
+## OpenIdIntrospection
+```csharp
+public sealed class OpenIdIntrospection {
+    public string Issuer { get; set; }
+    public string Subject { get; set; }
+    public string Audience { get; set; }
+    public long Expiration { get; set; }
+    public long IssuedAt { get; set; }
+    public long AuthTime { get; set; }
+    public string Acr { get; set; }
+    public List<string> AuthenticationMethods { get; set; }
+    public string SessionId { get; set; }
+    public string Email { get; set; }
+    public bool EmailVerified { get; set; }
+    public string Name { get; set; }
+    public string GivenName { get; set; }
+    public string PreferredUsername { get; set; }
+    public string Nickname { get; set; }
+    public List<string> Groups { get; set; }
+    public bool Active { get; set; }
+    public string Scope { get; set; }
+    public string ClientId { get; set; }
+}
+```
+
+## OpenIdToken
+```csharp
+public sealed class OpenIdToken {
+    public string AccessToken { get; set; }
+    public string RefreshToken { get; set; }
+    public string TokenType { get; set; }
+    public int ExpiresIn { get; set; }
+    public string IdToken { get; set; }
+}
+```