How do you implement Package development in Laravel?

my-package/
├── src/
│   ├── MyPackageServiceProvider.php
│   ├── Facades/
│   └── Commands/
├── config/
├── resources/
├── tests/
└── composer.json

class MyPackageServiceProvider extends ServiceProvider {
    public function register() {
        $this->app->singleton("mypackage", function () {
            return new MyPackage();
        });
    }
    
    public function boot() {
        $this->publishes([
            __DIR__."/../config/mypackage.php" => config_path("mypackage.php"),
        ], "config");
        
        $this->loadRoutesFrom(__DIR__."/../routes/web.php");
        $this->loadViewsFrom(__DIR__."/../resources/views", "mypackage");
        $this->loadMigrationsFrom(__DIR__."/../database/migrations");
    }
}

class MyPackageFacade extends Facade {
    protected static function getFacadeAccessor() {
        return "mypackage";
    }
}

{
    "name": "vendor/my-package",
    "autoload": {
        "psr-4": {
            "Vendor\MyPackage\": "src/"
        }
    },
    "extra": {
        "laravel": {
            "providers": [
                "Vendor\MyPackage\MyPackageServiceProvider"
            ],
            "aliases": {
                "MyPackage": "Vendor\MyPackage\Facades\MyPackageFacade"
            }
        }
    }
}