create tao migrations script

[hutnikau]

Crete new migration in taoQtiTest extension:

sudo -u www-data php index.php '\oat\tao\scripts\tools\Migrations' -c generate -e taoQtiTest

Show migrations status

sudo -u www-data php index.php '\oat\tao\scripts\tools\Migrations' -c status

Apply migrations

sudo -u www-data php index.php '\oat\tao\scripts\tools\Migrations' -c migrate

Migrations are located in migrations folder of extension root.

See documentation page: https://oat-sa.atlassian.net/wiki/spaces/DEV/pages/279318424/Tao+Updater+Migrations

requires: oat-sa/generis#773

[ks16]

Migration works during TAO update.
But I think we have to add possibility to rollback executed migrations if something went wrong and also to execute --dry-run.

[ks16]

Approved