Fixed path combining issues + added cookie helper function

src/HopFrame.Security/Authentication/OpenID/IOpenIdAccessor.cs

@@ -10,4 +10,5 @@ public interface IOpenIdAccessor {
     Task<string> ConstructAuthUri(string state = null);
     Task<OpenIdIntrospection> InspectToken(string token);
     Task<OpenIdToken> RefreshAccessToken(string refreshToken);
+    void SetAuthenticationCookies(OpenIdToken token);
 }