[patch] proposed patch for managing timeouts on doveadm iteration with -A

Hi

having further investigated the timeouts mentioned in the previous thread, I am submitting this patch as a potential solution.

Basically with -A doveadm parameter, the 155 second timeout is applied to the whole end to end transaction. With -F parameter the 155 second timeout is applied to each single user operation. Changing the logic of -A to follow -F looks a bit invasive. So this patch does more or less the same thing, i.e. giving each user operation 155 seconds timeout, done in a different way. Whenever another username is returned, the timeout is reset.

PS I got help from Claude on this.

best regards

John