Logging Project Information With Log4j2 (Challenge)

# Introduction

In this challenge, we will integrate the Log4j2 logging framework into the Spring Boot framework to log project information in both the console and log files. The goal is to configure Log4j2 with Spring Boot by using the provided `log4j2.xml` configuration file and the `application.properties` file. We will modify the `DemoApplication` class to create a logger and log the information using different log levels. Finally, we will package the project and start the service to check the challenge results.