Updated CreateDatabaseCommand to create the empty database if it does not exist

module/CLI/src/Command/Db/AbstractDatabaseCommand.php

@@ -0,0 +1,33 @@
+<?php
+declare(strict_types=1);
+
+namespace Shlinkio\Shlink\CLI\Command\Db;
+
+use Shlinkio\Shlink\CLI\Command\Util\AbstractLockedCommand;
+use Symfony\Component\Console\Helper\ProcessHelper;
+use Symfony\Component\Console\Output\OutputInterface;
+use Symfony\Component\Lock\Factory as Locker;
+use Symfony\Component\Process\PhpExecutableFinder;
+
+use function array_unshift;
+
+abstract class AbstractDatabaseCommand extends AbstractLockedCommand
+{
+    /** @var ProcessHelper */
+    private $processHelper;
+    /** @var string */
+    private $phpBinary;
+
+    public function __construct(Locker $locker, ProcessHelper $processHelper, PhpExecutableFinder $phpFinder)
+    {
+        parent::__construct($locker);
+        $this->processHelper = $processHelper;
+        $this->phpBinary = $phpFinder->find(false) ?: 'php';
+    }
+
+    protected function runPhpCommand(OutputInterface $output, array $command): void
+    {
+        array_unshift($command, $this->phpBinary);
+        $this->processHelper->run($output, $command);
+    }
+}