Attempt to create a directory for the log file

[nigredo-tori]

Given log configuration like this:

log=./logs/service.log
log.overwrite=false
log.roll.prefix=service
log.roll.suffix=.log
log.roll.size=10

, the service does not create service.log if the logs folder didn't exist before launch. That means that the log is lost unless we explicitly create the directory elsewhere.

Winrun4j version - 0.4.5