OZG-6450: Add license-plugin

pom.xml

@@ -37,6 +37,7 @@
 	<groupId>de.ozgcloud.processor</groupId>
 	<artifactId>processor-manager</artifactId>
 	<version>0.5.0-SNAPSHOT</version>
+	<inceptionYear>2023</inceptionYear>
 
 	<name>ozgcloud-processor-manager</name>
 	<description>OZG-Cloud Processor Manager</description>
@@ -136,6 +137,15 @@
 	</dependencies>
 
 	<build>
+		<pluginManagement>
+			<plugins>
+				<plugin>
+					<groupId>com.mycila</groupId>
+					<artifactId>license-maven-plugin</artifactId>
+				</plugin>
+			</plugins>
+		</pluginManagement>
+
 		<plugins>
 			<plugin>
 				<groupId>org.apache.maven.plugins</groupId>