GH-156 - Polish example.

Add sample documentation. Reintroduce Lombok to avoid boilerplate. Use jMolecules DDD abstractions to represent aggregates. Use Scenario API in test cases.

spring-modulith-example/pom.xml

@@ -72,6 +72,11 @@
 
 		<!-- jMolecules -->
 
+		<dependency>
+			<groupId>org.jmolecules</groupId>
+			<artifactId>jmolecules-ddd</artifactId>
+		</dependency>
+
 		<dependency>
 			<groupId>org.jmolecules</groupId>
 			<artifactId>jmolecules-events</artifactId>
@@ -112,6 +117,12 @@
 			<optional>true</optional>
 		</dependency>
 
+		<dependency>
+			<groupId>org.projectlombok</groupId>
+			<artifactId>lombok</artifactId>
+			<scope>provided</scope>
+		</dependency>
+
 	</dependencies>
 
 	<repositories>