1. Fixed incorrect fully qualified name of the main function in the demo plugin.

2. Added project console log.

Author: ZHANGSHUNLIN

build/build-bifromq-starters/src/main/resources/log4j2.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!--
+  ~ Licensed to the Apache Software Foundation (ASF) under one
+  ~ or more contributor license agreements.  See the NOTICE file
+  ~ distributed with this work for additional information
+  ~ regarding copyright ownership.  The ASF licenses this file
+  ~ to you under the Apache License, Version 2.0 (the
+  ~ "License"); you may not use this file except in compliance
+  ~ with the License.  You may obtain a copy of the License at
+  ~
+  ~   http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~ Unless required by applicable law or agreed to in writing,
+  ~ software distributed under the License is distributed on an
+  ~ "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  ~ KIND, either express or implied.  See the License for the
+  ~ specific language governing permissions and limitations
+  ~ under the License.
+  -->
+
+<Configuration xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+               monitorInterval="5"
+               xmlns="http://logging.apache.org/log4j/2.0/config"
+               xsi:schemaLocation="http://logging.apache.org/log4j/2.0/config
+                                   http://logging.apache.org/log4j/2.0/log4j-config-2.14.1.xsd">
+
+    <Appenders>
+        <Console name="stdout" target="SYSTEM_OUT">
+            <PatternLayout pattern="%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n"/>
+            <ThresholdFilter level="INFO" onMatch="ACCEPT" onMismatch="DENY"/>
+        </Console>
+    </Appenders>
+
+    <Loggers>
+        <Root level="info">
+            <AppenderRef ref="stdout"/>
+        </Root>
+    </Loggers>
+</Configuration>

build/build-plugin-demo/pom.xml

@@ -32,7 +32,7 @@
 
     <properties>
         <plugin.id>bifromq-demo-plugin</plugin.id>
-        <plugin.class>org.apache.demo.plugin.DemoPlugin</plugin.class>
+        <plugin.class>org.apache.bifromq.demo.plugin.DemoPlugin</plugin.class>
     </properties>
     <dependencies>
         <dependency>