Add delombok (#10)

Author: mvollmary

pom.xml

@@ -9,6 +9,7 @@
   <url>https://github.com/noncat-lang/java-template-engine</url>
 
   <properties>
+    <src.dir>${project.basedir}/src/main/java</src.dir>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <maven.compiler.release>11</maven.compiler.release>
@@ -55,6 +56,7 @@
   </dependencies>
 
   <build>
+    <sourceDirectory>${src.dir}</sourceDirectory>
     <plugins>
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
@@ -128,6 +130,7 @@
       <id>release</id>
       <properties>
         <gpg.executable>gpg</gpg.executable>
+        <src.dir>${project.build.directory}/delombok</src.dir>
       </properties>
       <distributionManagement>
         <snapshotRepository>
@@ -173,6 +176,24 @@
             <artifactId>maven-release-plugin</artifactId>
             <version>3.0.0-M5</version>
           </plugin>
+          <plugin>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok-maven-plugin</artifactId>
+            <version>1.18.20.0</version>
+            <executions>
+              <execution>
+                <phase>generate-sources</phase>
+                <goals>
+                  <goal>delombok</goal>
+                </goals>
+                <configuration>
+                  <addOutputDirectory>false</addOutputDirectory>
+                  <sourceDirectory>${project.basedir}/src/main/java</sourceDirectory>
+                  <outputDirectory>${project.build.directory}/delombok</outputDirectory>
+                </configuration>
+              </execution>
+            </executions>
+          </plugin>
           <plugin>
             <groupId>org.apache.maven.plugins</groupId>
             <artifactId>maven-source-plugin</artifactId>