conf: move log configuration to source

Author: SpyrosKou

ros-app/src/main/resources/log4j2.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--Author: Spyros Koukas-->
+<Configuration status="WARN">
+<Appenders>
+    <Console name="Console" target="SYSTEM_OUT">
+        <PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss.SSS} [%t] %-5level %c{1} - %msg%n"/>
+    </Console>
+</Appenders>
+<Loggers>
+    <Logger name="com.github.rosjava_actionlib" level="ERROR"/>
+    <Logger name="org.ros.internal.node.RosoutLogger" level="TRACE"/>
+    <Logger name="org.ros" level="ERROR"/>
+    <Root level="INFO">
+        <AppenderRef ref="Console"/>
+    </Root>
+</Loggers>
+</Configuration>