[FEATURE] Create a login + signup form

**Is your feature request related to a problem? Please describe.**
For now when a user click on the my account button, it does nothing.

**Describe the solution you'd like**
We want it to lead to a form that allow the user to login and also suggest him to sign up if he doesn't yet have an account.
The login form must be Simple and good looking like this one

**Describe alternatives you've considered**
You have a good tutorial for that [here](https://jasonwatmore.com/post/2019/06/10/angular-8-user-registration-and-login-example-tutorial)

**Additional context**
Please do it while respecting our code styles and our project structure. Think also to add validation.