DecorateWithApp decorate request with app.

DecorateWithGithubUser decorate request with github user.

DecorateWithSub decorate request with jwt's sub = user id.

DecorateWithUser decorate request with user.

GetApp returns app from request's context.

GetGithubUser returns github user from request's context.

GetSub returns user id from request's context.

GetUser returns user from request's context.