Allow for urn:ietf:wg:oauth:2.0:oob redirect_uri



Seems like now it is not possible to remove `localhost` part from `redirect_uri`.

I'm getting this error probably because I can't have exactly they same as I type in admin panel of Timely application:

Docs: https://dev.timelyapp.com/#authorization

![image](https://user-images.githubusercontent.com/11590960/140936042-49a65bc2-360d-4989-b03b-98675493a8c7.png)


 