create db command with ci 4

CreateDb.php

<?php namespace App\Commands;

use CodeIgniter\CLI\BaseCommand;
use CodeIgniter\CLI\CLI;

class CreateDb extends BaseCommand
{
    protected $group       = 'app';
    protected $name        = 'app:createdb';
    protected $description = 'Create database';

    public function run(array $params)
    {
        $forge = \Config\Database::forge();
        $forge->createDatabase(env('database.default.database'), true);
    }
}

usage.md

run with command:

php spark app:createdb

or in composer.json, add to the script:

	"scripts": {
		"test": "phpunit",
		"post-update-cmd": [
			"@composer dump-autoload",
			"php spark app:createdb"
		],
		"post-install-cmd": [
			"php spark app:createdb"
		]
	},