Fast scan mode

[jpsnyder]

In YARA we had a "fast scan" mode which can be enabled either with the --fast-scan flag or setting fast=True in the match() function. This would cause it to stop scanning a file once it has already determined that the rule matches. Making it much faster for batch processing files when all you care about is if a rule hit and not.

Is there any plans on bringing the feature over to YARA-X?