Allow plugins to use Log4J to log (#6288)

patches/api/Allow-plugins-to-use-SLF4J-for-logging.patch

@@ -33,11 +33,16 @@ index 0000000000000000000000000000000000000000..00000000000000000000000000000000
      @NotNull
      public Logger getLogger();
  
-+    // Paper start - Add SLF4J logger
++    // Paper start - Add SLF4J/Log4J loggers
 +    @NotNull
 +    default org.slf4j.Logger getSLF4JLogger() {
 +        return org.slf4j.LoggerFactory.getLogger(getLogger().getName());
 +    }
++
++    @NotNull
++    default org.apache.logging.log4j.Logger getLog4JLogger() {
++        return org.apache.logging.log4j.LogManager.getLogger(getLogger().getName());
++    }
 +    // Paper end
 +
      /**