Add tablePrefix to SetupController.php, allowing it to be used as a command-line parameter

[engram-design]

We're doing the following in our own command-line scaffolding, and it works great! However, it seems like tablePrefix is the only option not able to be set via the command line. For instance, we're doing:

$dbOptions = [
    'driver' => 'mysql',
    'user' => 'root',
    'server' => 'localhost',
    'port' => '3306',
    'password' => 'somepassword',
    'database' => 'craft_database',
    'tablePrefix' => 'craft_',
];

Craft::$app->runAction('setup/db-creds', $dbOptions);

Which throws an error Error: Unknown option: --tablePrefix. Adding this fixes the issue.

[brandonkelly]

Thanks!