Access code

[abdhalees]

• add Setup for mongoose.
• create a model for access codes -code will not be valid after 24 hours-
• add 4 endpoints as follows: 1- POST /admin/accesscode returns a code 2- POST /user/accesscode body: {code: "*******"} returns a token to be stored in the browser 3- POST /admin/signup body: {username: "admin", password: "admin", token: "*****"} won't be accessible in the browser, will only used by developers to create and admin, a token must be provided. 4- POST /admin/login body: {username: "admin, password: "admin"} should redirect admin to generate code page

[abdhalees]

@ivanmauricio I agree, also it will be a chance for me to get used to async/await