Add FileHandler logger

Author: ak-git

helidon/src/main/resources/logging.properties

@@ -1,5 +1,11 @@
-handlers=java.util.logging.ConsoleHandler
+handlers=java.util.logging.ConsoleHandler, java.util.logging.FileHandler
 java.util.logging.SimpleFormatter.format=%1$tY.%1$tm.%1$td %1$tH:%1$tM:%1$tS.%1$tL %5$s%6$s%n
+
+java.util.logging.FileHandler.pattern=%h/helidon-se.%u.log
+java.util.logging.FileHandler.limit=50000
+java.util.logging.FileHandler.count=1
+java.util.logging.FileHandler.formatter=java.util.logging.SimpleFormatter
+java.util.logging.FileHandler.append=true
 # Global logging level. Can be overridden by specific loggers
 .level=INFO
 io.helidon.webserver.level=INFO