[BAEL-10127] - Added code for modelmapper article

spring-boot/src/main/java/com/baeldung/modelmapper/PostApplication.java

@@ -0,0 +1,20 @@
+package com.baeldung.modelmapper;
+
+import org.modelmapper.ModelMapper;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.Bean;
+
+@SpringBootApplication
+public class PostApplication {
+    
+    public static void main(String[] args) {
+        SpringApplication.run(PostApplication.class, args);
+    }
+    
+    @Bean
+    public ModelMapper modelMapper() {
+        return new ModelMapper();
+    }
+
+}