Add option to chose between database type

[dingo-d]

Describe your feature request

Currently, the only database that can be used with wp-pest is SQLite.

While this is practical, as it doesn't require any manual database setup, it's not ideal. Especially if WooCommerce needs to be tested.

This is problematic also when actionscheduler has to be used.

Describe the solution you'd like

A new flag should be set to select the database type (MySQL or SQLite). If MySQL is selected, the package that adds support for SQLite won't be pulled and installed.

Please confirm that you have searched existing issues and discussions about this feature.

Yes