#1874 Introduce individual ConsoleLogger instance per class (#1875)

* #1874 Introduce individual ConsoleLogger instance per class
- Create ConsoleLoggerFactory from which a separate logger can be created for each class
- Allows to support individual log level settings in the future

* Fix CodeStyle issue

* Replace full class name with import

* Update usages after merge from master

src/test/java/fr/xephi/authme/TestHelper.java

@@ -80,7 +80,7 @@ public final class TestHelper {
      */
     public static Logger setupLogger() {
         Logger logger = Mockito.mock(Logger.class);
-        ConsoleLogger.setLogger(logger);
+        ConsoleLogger.initialize(logger, null);
         return logger;
     }
 
@@ -91,7 +91,7 @@ public final class TestHelper {
      */
     public static Logger setRealLogger() {
         Logger logger = Logger.getAnonymousLogger();
-        ConsoleLogger.setLogger(logger);
+        ConsoleLogger.initialize(logger, null);
         return logger;
     }