created:
    - database/factories/CountryFactory.php
    - database/factories/CityFactory.php
    - database/factories/LecturerFactory.php
    - database/migrations/2022_11_29_194626_create_countries_table.php
    - database/migrations/2022_11_29_194627_create_cities_table.php
    - database/migrations/2022_11_29_194628_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_id: biginteger, user_id: biginteger, role: 'string nullable' }
    Team: { user_id: biginteger, name: string, personal_team: boolean }
    TeamInvitation: { team_id: biginteger, email: string, role: 'string nullable' }
    User: { name: string, email: string, email_verified_at: 'datetime nullable', password: string, remember_token: 'string:100 nullable', current_team_id: 'biginteger nullable', profile_photo_path: 'string:2048 nullable', two_factor_secret: 'text nullable', two_factor_recovery_codes: 'text nullable', two_factor_confirmed_at: 'datetime nullable' }
    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' }