created:
    - database/factories/CountryFactory.php
    - database/factories/CityFactory.php
    - database/factories/LecturerFactory.php
    - database/migrations/2022_11_29_193945_create_countries_table.php
    - database/migrations/2022_11_29_193946_create_cities_table.php
    - database/migrations/2022_11_29_193947_create_lecturers_table.php
    - app/Models/Country.php
    - app/Models/City.php
    - app/Models/Lecturer.php
    - database/seeders/CountrySeeder.php
    - database/seeders/CitySeeder.php
    - database/seeders/LecturerSeeder.php
    - app/Nova/Country.php
    - app/Nova/City.php
    - app/Nova/Lecturer.php
models:
    Membership: {  }
    Team: {  }
    TeamInvitation: {  }
    User: {  }
    Country: { name: string, code: string, relationships: { hasMany: City } }
    City: { name: string, country_id: 'id foreign' }
    Lecturer: { first_name: string, last_name: string, active: 'boolean default:true' }