add user crud and login/signup and jwt access token

[ammerss]

New features :

• CRUD for users
• Log in with email and password
• Sign up with name, email and password
• Use your jwt token to delete user ( Add {Authorization : Bearer \} in header like example pic below)

Reference :

• https://docs.nestjs.com/recipes/sql-typeorm
• https://www.linkedin.com/pulse/nestjs-app-authentication-login-signup-moaz-irfan/