[ADD] add the module sale_automatic_workflow_cancel this module give the...

... posibility to cancel automatically unconfirm order after some delay and depending of the payment method
I think it's fine to commit in this context:
* we are in a cron
* it will lock only 1 sale order at a time and for a short duration, not locking a long range and blocking users
* an ordered error is rollbacked and the process continues with the next
* if the cron is interrupted, all the already cancelled orders will already be committed.