feat(database): add pdo options to database configs

[innocenzi]

Closes #1663

This pull request adds the ability to pass more PDO options to all 3 database configs.

return new MysqlConfig(
    persistent: true,
    verifyServerCertificate: true,
    certificateAuthority: '/etc/ssl/certs/ca-certificates.crt',
    clientCertificate: '/path/to/cert.pem',
    clientKey: '/path/to/key.pem',
);