ci: add maven-release-plugin with formatting

Author: BernhardFuchs

pom.xml

@@ -45,6 +45,7 @@
 	<properties>
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
 		<github.global.server>github</github.global.server>
+		<maven-release-plugin.version>2.5.3</maven-release-plugin.version>
 	</properties>
 
 	<build>
@@ -95,6 +96,14 @@
 					<includeScope>runtime</includeScope>
 				</configuration>
 			</plugin>
+			<plugin>
+				<artifactId>maven-release-plugin</artifactId>
+				<version>${maven-release-plugin.version}</version>
+				<configuration>
+					<scmCommentPrefix>[maven-release-plugin]</scmCommentPrefix>
+					<tagNameFormat>v@{project.version}</tagNameFormat>
+				</configuration>
+			</plugin>
 		</plugins>
 	</build>