Check whether the database matches our schema.
typedef MyDBSchema = {
...
}
final schemaName = '...';
final driver = new tink.sql.drivers.MySql(...);
final myDB = new MyDBSchema(schemaName, driver);
final schemaOk = @:await SchemaVerification.run(myDB, schemaName, driver);
if (!schemaOk) {
throw new Error('schema `$schemaName` does not match');
} else {
trace('schema `$schemaName` verified');
}