User/password authentication strategy / custom oAuth provider
I just started a new webapp-project using the application framework Strapi which offers authentication via grant. I want my own authentication in the webapp but am "forced" to use grant.

Is there an easy way to set up/fake my own oAuth provider, will I need to use middleware like [koa-oauth-server](https://github.com/oauthjs/koa-oauth-server) or is there even a simple user/pw strategy for grant?
