moving SpringBootPersistenceApplication class to its own package

* from com.baeldung to com.baeldung.logging to prevent it from loading
contexts from other applications.

persistence-modules/spring-boot-persistence-mongodb-2/src/main/java/com/baeldung/logging/SpringBootPersistenceApplication.java

@@ -1,4 +1,4 @@
-package com.baeldung;
+package com.baeldung.logging;
 
 import org.springframework.boot.SpringApplication;
 import org.springframework.boot.autoconfigure.SpringBootApplication;